EP1490841A2 - Dispositif de verification de caracteristiques de securite - Google Patents

Dispositif de verification de caracteristiques de securite

Info

Publication number
EP1490841A2
EP1490841A2 EP03745732A EP03745732A EP1490841A2 EP 1490841 A2 EP1490841 A2 EP 1490841A2 EP 03745732 A EP03745732 A EP 03745732A EP 03745732 A EP03745732 A EP 03745732A EP 1490841 A2 EP1490841 A2 EP 1490841A2
Authority
EP
European Patent Office
Prior art keywords
light
observation
polarization filter
polarization
diode
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP03745732A
Other languages
German (de)
English (en)
Inventor
Klaus Franken
Jakob Grob
Andreas Dostmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Landqart AG
Original Assignee
Landqart AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Landqart AG filed Critical Landqart AG
Publication of EP1490841A2 publication Critical patent/EP1490841A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
    • G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
    • G07D7/06—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency using wave or particle radiation
    • G07D7/12—Visible light, infrared or ultraviolet radiation
    • G07D7/128—Viewing devices
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/06009—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code with optically detectable marking
    • G06K19/06046—Constructional details
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
    • G06K7/12—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation using a selected wavelength, e.g. to sense red marks and ignore blue marks

Definitions

  • the present invention relates to a device and a method for visualizing security elements present in an object, which have at least one photoluminescent segment which is characterized by a linearly polarized absorption.
  • Such a security element is such.
  • B. has been described in WO 00/19016.
  • security papers and security articles in general, for example banknotes, checks, shares, bonds, ID cards, Passports, driver's licenses, entrance tickets, stamps and similar documents or, for example, for bank cards, credit cards and similar security elements are used which have the purpose of preventing or complicating the forgery of these objects by unauthorized persons (R. van Renesse, Optical Document Security "(1997 ), Artech House, Boston), such security elements are used to identify the authenticity or validity of objects or more generally to enable or facilitate the identification of objects.
  • security threads or strips which may consist, for example, of a plastic coated with metal, in security papers, in particular for use in banknotes and similar securities, is widespread. If these security threads or strips are embedded in the security paper, for example, and this is then possibly printed, these security elements cannot be easily recognized if the object is viewed in reflection. However, they appear as a dark shadow when the object is illuminated and is thus observed in transmission.
  • WO 00/19016 in which a security paper or quite generally security articles are described which contain at least one security element which has at least one photoluminescent segment which is characterized by linearly polarized photoluminescence and / or linearly polarized absorption.
  • linearly polarized excitation light which is generated, for example, by an external light source i. V. m. a linear polarizer can be generated, absorbed by the segment depending on the orientation of the polarization axis of the segment and the polarization direction of the excitation light, which can lead to a strong light / dark contrast when viewed by the naked eye.
  • Such devices should have a high resolution and good contrast and should be technically simple and, in particular, very compact to implement, that is to say resistant, easy to carry and inexpensive to produce, in order to enable widespread use.
  • the invention is therefore based on the object of providing a method or a device for visualizing security elements present in an object, the security elements to be observed having at least one photoluminescent segment which is characterized by a linearly polarized absorption.
  • the segment can additionally have polarized emission in the visible range.
  • the object for example a banknote, can also contain additional security features, which can be verified with the same device if necessary.
  • the device should be very compact and allow easy and reliable detection of the security elements without having to resort to a complicated and possibly fragile design.
  • At least one UV light source particularly preferably in the form of a UV diode, and at least one polarization filter are arranged such that the light of the light source is linearly polarized by the polarization filter, respectively in a dark room on the object strikes the photoluminescent segments present therein, and the segment can be used to observe photoluminescent light in the visible range through an observation opening.
  • the essence of the invention is, in a compact design, in particular with the aid of one or more UV diodes, which can be extremely small and have a low energy requirement, a device for verifying polarizing (in particular selectively absorbing only light of a certain polarization direction) ) and to provide fluorescent security features which can be manufactured cheaply, are cheap to operate (simple batteries, low power consumption) and which are hardly susceptible to interference.
  • UV diodes have a sufficient light intensity to build such a compact analysis device. Reliable observation even in daylight is ensured by arranging a dark room in which the object with the security feature is illuminated by a UV light beam and which dark room has a specific observation opening.
  • UV diodes instead of the UV diodes, another UV light source can also be used, a corresponding laser light source with emission in the correct UV range, conceivable are also broadband light sources, in front of which a corresponding filter is switched, which only allows UV radiation to pass through. If necessary, such a filter can also be a polarization filter at the same time, which accordingly only allows UV radiation of a certain linear polarization direction to pass through.
  • the observation opening is preferably designed in such a way that the eye area can be placed directly on the observation opening (optionally provided with a corresponding eye support, for example in the form of a rubber ring) in such a way that as little light as possible can get into the dark room.
  • the UV diode is a diode which emits light in the UV range from 300 to 400 nanometers, in particular in the range from 350 to 385 nanometers, the UV diode having an optical power of Range from 0.5 to 20 mW, particularly preferably from 1 to 5 mW at a current of 15 to 20 mA and room temperature.
  • the UV diode can also emit light in a wider range, namely in the UV range from 180 to 500 nanometers. Depending on the security feature used, a broader emission characteristic can be advantageous. Outputs of the UV diodes outside the range specified above can also be used, but typically higher outputs are associated with greater power consumption, which has a negative effect on the service life of the batteries used, and lower outputs typically lead to a comparatively low light intensity and accordingly to a reduced recognizability of the desired effect. However, the latter can optionally be compensated for by either a stronger concentration (focusing) of the light beam or z. B. by an electronic amplification of the signal reflected by the object.
  • Such diodes for the UV range are available today in an extremely small design, z. B. with diameters in the range of 3 to 7 mm and a height of 3 to 10 millimeters, which makes them suitable for the use described here.
  • a hand-held device can be produced at low cost, and is particularly easy to carry, for example, in a vest pocket, which enables universal and mobile use as an analysis device.
  • the observation can be carried out through a filter which essentially does not allow light in the wavelength range of the UV diode to pass, while light in the wavelength range of the visible light from the segment photoluminescent in can happen substantially unhindered.
  • a filter can simply be installed in front of the observation opening and increases the quality of the observation due to the elimination of interference signals.
  • a band-selective filter it is also possible to provide a rigid or possibly also movable polarization filter in the observation path, so that only linearly polarized light of a specific polarization direction emitted by the security feature is observed. Interference signals are suppressed even more efficiently and observation is simplified and improved.
  • the polarization filter is a polarization filter that only allows light of a certain polarization direction to pass through both in the UV range and in the visible range
  • a single polarization filter of this type can be placed both in the light beam of the incident light and in the light path between the object and the observer become.
  • the incident light is linearly polarized, and emitted light, which is likewise linearly polarized by the correspondingly configured object, is additionally filtered accordingly before the observation. In this way, the signal-to-noise ratio can be improved, and, if necessary, security features can also be verified, which do not show linearly polarized absorption, but do show linearly polarized emission.
  • the polarization filter can be rotated for observation about an axis perpendicular to the plane of the polarization filter. While the light / dark effect that occurs due to the polarization effects of the security features in a rigid polarization filter is only visible when the handheld device is rotated about an axis essentially perpendicular to the plane of the polarization filter, this effect can be very simple and in the presence of a polarization filter that can be rotated in the housing be reliably effected. This rotation of the polarization filter can be done using appropriate means, e.g. B.
  • the translation mechanism is a way of moving the polarization filter via a simple button movement, e.g. B. with the thumb at one end of the pin to rotate.
  • This can e.g. B. against a spring force, so that the polarization filter is rotated by pressing the button down at least 180 degrees, and rotates back automatically to its original position when the button is released due to the spring force.
  • a mechanism is e.g. B. can be realized via a spiral spring and suitably deflected cables.
  • the polarization filter it is also possible to rotate the polarization filter with the aid of a small motor, the polarization filter being rotatable with a rotation frequency in the range from 0.2 to 5 Hz, particularly preferably with a rotation frequency from 0.5 to 2 Hz. It can be a continuous rotatability.
  • the device is designed in the form of a pin which has a cylindrical housing for receiving at least one battery and a diode and a lower cylindrical housing part, possibly with a larger diameter, wherein the lower housing part forms a cavity as a dark room with an observation opening, with which the object to be observed can be covered, with particular preference the device has a length of less than 10 centimeters and at its thickest point a diameter of less than 2.5 cm ,
  • the observation opening is preferably an opening in the lower housing part in the form of a segment cut-out extending from the lower edge of the lower housing part with an opening angle of in the range from 90 to 150 degrees and a height of less than 1.5 cm.
  • the desired flip-flop effect can be generated either by the user rotating the hand-held device around the observation axis or by means being provided to rotate the polarization filter or the polarization filter in such a way that the direction of polarization of the object directed light is rotated.
  • This alternating on / off holding of the two groups creates a flip-flop effect which is similar to that which is produced when the polarization filter is rotated (e.g. continuously).
  • the advantage of this solution is that there are no mechanical parts, but the effect is generated exclusively by appropriate electrical or electronic control of different groups.
  • the UV diodes are advantageously switched on or off alternately in groups, the change between the two groups being carried out at a frequency of 0.2 to 5 Hz, particularly preferably at a frequency of 0.5 to 2 Hz he follows. If there are more than 2 groups, these are clocked accordingly higher one after the other, whereby the group should be controlled at zero degrees and those at 90 degrees in the frequency specified above.
  • the UV diodes of the 2 groups can be controlled with an essentially sinusoidal intensity profile, the phase shift between the 2 groups being essentially 90 degrees.
  • the control of the two groups according to this pattern simulates to a certain extent the rotation of a polarization filter in front of all diodes or a rotation of the polarization direction. Appropriate control with more than 2 groups is of course possible and may be useful.
  • An advantageous development of the above-mentioned embodiment consists in the fact that two groups of two UV diodes each are present, UV diodes belonging to each group being arranged opposite one another with respect to the observation axis and illuminating the object, for example, obliquely from above, and the two groups around 90 degrees shifted around the observation axis.
  • a compact arrangement of the UV diodes to the side of the observation path is possible, and moreover, correspondingly orthogonally oriented polarization filters can be easily aligned in front of the respective group.
  • there is a comparatively homogeneous illumination of the object and the illumination of the object is basically similar when the first or the second (nth) group is active. Effects that seem similar to the flip-flop effect that is actually desired can be created by the mutual effect Switching of the two groups and not due to the polarization effects can be optimally avoided.
  • the basic procedure is, for example, that a polarization filter is arranged in front of each UV diode, the orientation of the polarization direction of the polarization filters of the first group being oriented essentially perpendicular to the orientation of the polarization direction of the polarization filters of the second group.
  • a polarization filter is arranged in front of each UV diode, the orientation of the polarization direction of the polarization filters of the first group being oriented essentially perpendicular to the orientation of the polarization direction of the polarization filters of the second group.
  • a polarization filter can take on this task if it only allows UV light to pass through, which has a polarization direction parallel to the main axis of the cylinder.
  • Such a cylindrical polarization filter which can consist, for example, of a rolled polarization film, can be used in combination with 2 groups of UV diodes, but also in combination with any higher number of UV diodes if these are appropriately distributed over the circumference ,
  • a further preferred embodiment of the present invention is characterized in that a holding arm and an observation tube are arranged, the observation tube being oriented essentially perpendicular to the holding arm.
  • the observation can take place through a lens, particularly preferably through a magnifying glass, that is to say a lens or a magnifying glass can be placed in front of or into the observation opening become.
  • a further improvement of the visualization of the effects with possibly corresponding electronic filter options can be realized by the Observation by electronic aids, in particular in the form of a recording device such as a camera, in particular a digital camera, possibly in combination with a corresponding electronic visualization means such as a display.
  • electronic aids in particular in the form of a recording device such as a camera, in particular a digital camera, possibly in combination with a corresponding electronic visualization means such as a display.
  • a polarization filter in the observation axis, which particularly preferably does not allow light in the wavelength range of the UV diode to pass, whereas light in the wavelength range of the light from the segment photoluminescent can essentially only pass in a way that is filtered with respect to its polarization direction.
  • This arrangement is particularly advantageous if security elements are present which also have a linearly polarized emission.
  • photoluminescent security features that do not have linearly polarized absorption but only linearly polarized emission can also be verified in this way.
  • Such a filter can optionally be rotated mechanically.
  • the device or the hand-held device can additionally have means for verifying other security features in the object.
  • security features can be of the most varied of types, for example magnetic, electrical, optical, electronic or electro-optical features, for example selected from the group consisting of barcodes, magnetic strips, conductivity, electroluminescence, photoluminescence, up-conversion (anti-Stokes) , Infrared signatures, electronically readable texts also with infrared writing (OCR writing), X-ray fluorescence features, etc.
  • the present invention also relates to a method for visualizing security elements present in an object, which have at least one photoluminescent segment which is characterized by a linearly polarized absorption.
  • the method is characterized in that light of at least one light source in the form of a UV diode is linearly polarized by at least one polarization filter in a dark room on the object respectively strikes the photoluminescent segments present therein, and the segment photoluminescent light is observed in the visible range through an observation opening.
  • the method is particularly preferably carried out using a device as described above.
  • the hand-held device comprises a cylindrical housing 1, in which one or more batteries (for example here 3 VINNIC button cells of the Alkaline Cell L1154 type: IEC design: LR44; diameter: 11.6mm; height: 5.4mm; voltage: 1.5V; capacity: 164mAh; standard current: 0.22mA; weight: 1.88g) and can be accommodated which can be closed at the top by a screw cap 9.
  • batteries for example here 3 VINNIC button cells of the Alkaline Cell L1154 type: IEC design: LR44; diameter: 11.6mm; height: 5.4mm; voltage: 1.5V; capacity: 164mAh; standard current: 0.22mA; weight: 1.88g
  • the cylindrical housing 1 has a diameter of 1.3 cm.
  • a lower housing part 2 is arranged, which has a larger diameter of 2 cm.
  • the lower housing part is attached to the cylindrical housing part 1 via grub screws 6.
  • the UV light source and the polarization filter 4 which is oriented perpendicular to the axis 19 of the hand-held device 20, are arranged in the interior of the lower housing part 2 or at the end of the cylindrical housing part 1.
  • the polarization filter 4 is held in a holder 5 and has an essentially round shape.
  • Standard UV polarization filters are suitable as linear polarization filters, specifically a filter from Polaroid with the trade name "HNP'B linear ultraviolet *", with a spectral range of 275 - 750 nm (delivery size of 100 x 100 x 0.15 mm) used.
  • the socket 5 is rotatably mounted about the axis 19 of the hand-held device, and in order to rotate the polarization filter 4, a pin 7 is fastened to the socket 5, which pin 7 projects outwards through a corresponding, slot-shaped opening in the lower housing part 5 and can be viewed the light / dark effect of the polarizing security features can be rotated by hand when the polarization filter is rotating.
  • the filter can be rotated by 180 degrees, but it is also possible to provide a slot for the pin 7, which allows rotation by up to 270 or more degrees. It is also possible to provide a spiral spring so that the filter automatically returns to the original position after rotation in one direction.
  • polarization filter 4 it is also possible to set the polarization filter 4 in rotation with a motor, or to provide a mechanism in which a z. B. in the area of the screw cap 9 arranged button, which can be operated with the thumb, the polarization filter 4 can be rotated.
  • the lower housing part 2 is designed as a tube at the lower end of the hand-held device 20, so that a dark space 17 is formed towards the bottom, with which the object 8 to be observed can be covered. This will prevent daylight observation disturbs.
  • the lower housing part 2 has an observation opening 10, which is designed in the form of a lateral cutout. This observation opening 10 can either be completely open, or in addition with a UV filter and / or with a lens, e.g. B. a magnifying glass, to improve the observation.
  • Fig. Lb shows a view from below into the dark room 17.
  • the area 14 of the rotation of the polarization filter 4, as can be swept over by hand using the pin 7, is indicated by a double arrow.
  • the polarization filter 4 does not necessarily have to be contained in a circular version 5.
  • FIG. 1c shows a front view of a hand-held device 20. It can be seen how the object 8 is covered by the lower housing part 2 for observation, so that the part of the object 8 to be examined is covered by the dark room 17 and daylight is thus effectively shielded. The observation takes place through the observation opening 10.
  • the entire device 20 has a height of 9 cm, and can thus be carried in a vest pocket or the like.
  • the object is placed on one level and the handheld device is guided over the object in such a way that the object is covered by the lower housing part 2. Care should be taken to ensure that no disturbing light can enter the interior 17 laterally between the object and the underside of the housing, and thus reduce the quality of the observation.
  • FIG. 1d shows a side view of the hand-held device. It is indicated here how the observer 15 views the light 16 emitted by the security features in the visible area through the observation opening 10.
  • the arrangement of polarization filter 4 and diode 18 in the interior of the handheld device 20 are indicated by dashed lines.
  • the UV diode 18 is diodes such as those from Roithner Lasertechnik, A-1040 Vienna under the designations RLT 370-110 (approx. 1 mW power on the main axis of the diode with beam divergence of 110 degrees) or RLT 370-10 (approx.
  • E1L5M-3P0AP-02 and E1L5M-4P0A2-01 and E1S09-0P0AP- 02 (spectral range from 370 to 420 nanometers with a maximum at 385 nanometers, with a power of in the range from 1 to 20 mW at room temperature ) Tobe offered.
  • FIG. 2 shows a further exemplary embodiment to illustrate the present invention.
  • Figures 2a) to 2c) show views from three spatial directions, and Figures 2d) and e) perspective views from obliquely below and obliquely from above.
  • Identical reference symbols denote the same components.
  • the hand-held device of this exemplary embodiment is to a certain extent L-shaped, the device being held on one hand with one leg, the holding arm 26, and on the other hand being placed on an object such as a banknote or another object with corresponding security features.
  • the other leg of the hand-held device is oriented orthogonally to the holding arm 26 and consists of an observation tube 21.
  • the observation tube 21 has an eye rest 22, which is configured similarly to that found in telescopes or cameras. For example, it is a circumferential rubber lip on which the area around the eye can be placed. As a result, the existing dark room 17 is not disturbed by light incident on the observer side.
  • Batteries 29 are arranged in the housing of the holding arm 26, which have a cover 25 are accessible.
  • This lid 25 is arranged on the underside of the handheld device 20, where there is also a lower opening 24 on the observation axis, through which opening 24 the object 8 to be verified is viewed when viewed through the observation opening 10.
  • the operating elements and the control elements are located on the upper side of the holding arm 26.
  • the control elements are, on the one hand, a switch 28 for switching on the UV diodes 18.
  • a further switch 31 via which an alternating activation of different groups of UV diodes can be triggered.
  • LEDs are arranged as control elements on the upper side of the holding arm 26, on the one hand for the state of the batteries 29 and on the other hand a control lamp which indicates whether the UV diodes are switched on.
  • FIG. 2f shows a vertical section through the hand-held device according to line A in FIG. 2b).
  • lenses 23 are arranged in the observation path. These lenses 23 enlarge the object 8 observed through the observation opening 10 and through the lower opening 24. This is particularly the case, for example, with mottled fibers, which u. U. can be quite small, an advantage.
  • the arrangement of the UV diodes 18 can also be seen in FIG. 2f).
  • the UV diodes 18 are arranged to the side of the observation path and illuminate the object 8 from obliquely above.
  • the UV light 12 passes through a cylindrical polarization filter 30.
  • the axis of this cylindrical polarization filter 30 is arranged parallel to the observation axis, and the polarization filter 30 only allows UV light to pass, which has a polarization direction parallel to the observation axis.
  • the UV diodes 18 are arranged around this cylindrical polarization filter 30, as shown in FIG. 2g), the UV light falling on the object 8 becomes in each case for the UV diodes 18a arranged opposite of a first group have a first polarization direction (cf. arrows in FIG. 2g)), and for the UV diodes 18b of a second group arranged opposite, a second polarization direction which is perpendicular to the first Direction of polarization is aligned.
  • UV diodes 18 from different groups 18a or 18b can throw linearly polarized light 12a or 12b from the orthogonal polarization direction onto the object 8.
  • the two groups 18a and 18b are now switched on and off alternately, so that only UV diodes from a single group light up on the object. Alternating light rays hit the object, which alternately have a linear polarization direction of 0 or 90 degrees.
  • a security feature for example, whose polarized absorption direction is aligned parallel to the polarization direction of the light beam 12a, will appear bright, for example, when the group 18a is actuated, but at the moment when the second group 18b illuminates the object 8, such a security feature will appear dark. In this way, a flip-flop effect can be created, as if polarization filters were rotated.

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  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Electromagnetism (AREA)
  • Artificial Intelligence (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)

Abstract

L'invention concerne un dispositif (20) destiné à rendre visible des éléments de sécurité présents dans un objet (8), présentant au moins un segment photoluminescent caractérisé par une absorption polarisée linéairement. L'invention vise à mettre en oeuvre un tel dispositif de construction particulièrement simple et compacte. A cet effet, ledit dispositif comporte au moins une source de lumière UV se présentant sous la forme d'une diode UV (18), et au moins un filtre de polarisation (4) disposés de manière que la lumière de la source de lumière (18) est polarisée linéairement (12) par le filtre de polarisation (4), que la lumière frappe l'objet (8) dans une chambre noire (17), ou respectivement les segments photoluminescents contenus dans ledit objet, et que de la lumière (16) émise par le segment dans le domaine visible peut être observée au travers d'un orifice d'observation (10).
EP03745732A 2002-04-04 2003-03-25 Dispositif de verification de caracteristiques de securite Withdrawn EP1490841A2 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH572022002 2002-04-04
CH5722002 2002-04-04
PCT/CH2003/000192 WO2003085608A2 (fr) 2002-04-04 2003-03-25 Dispositif de verification de caracteristiques de securite

Publications (1)

Publication Number Publication Date
EP1490841A2 true EP1490841A2 (fr) 2004-12-29

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP03745732A Withdrawn EP1490841A2 (fr) 2002-04-04 2003-03-25 Dispositif de verification de caracteristiques de securite

Country Status (5)

Country Link
US (1) US20050211914A1 (fr)
EP (1) EP1490841A2 (fr)
AU (1) AU2003209916A1 (fr)
CA (1) CA2482197A1 (fr)
WO (1) WO2003085608A2 (fr)

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WO2003085608A2 (fr) 2003-10-16
AU2003209916A1 (en) 2003-10-20
WO2003085608A3 (fr) 2004-02-26
CA2482197A1 (fr) 2003-10-16
US20050211914A1 (en) 2005-09-29

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