EP0632228B1 - Stylistisches oder optisches Element- mit glänzendem Aussehen und neutraler Farbe- für Kfz-Beleuchtungs- oder Anzeige-Scheinwerfer - Google Patents

Stylistisches oder optisches Element- mit glänzendem Aussehen und neutraler Farbe- für Kfz-Beleuchtungs- oder Anzeige-Scheinwerfer Download PDF

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Publication number
EP0632228B1
EP0632228B1 EP94401475A EP94401475A EP0632228B1 EP 0632228 B1 EP0632228 B1 EP 0632228B1 EP 94401475 A EP94401475 A EP 94401475A EP 94401475 A EP94401475 A EP 94401475A EP 0632228 B1 EP0632228 B1 EP 0632228B1
Authority
EP
European Patent Office
Prior art keywords
element according
cover
glass
plastic material
headlamp
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.)
Expired - Lifetime
Application number
EP94401475A
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English (en)
French (fr)
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EP0632228A1 (de
Inventor
Ghislaine Pinson
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.)
Valeo Vision SAS
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Valeo Vision SAS
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Filing date
Publication date
Application filed by Valeo Vision SAS filed Critical Valeo Vision SAS
Publication of EP0632228A1 publication Critical patent/EP0632228A1/de
Application granted granted Critical
Publication of EP0632228B1 publication Critical patent/EP0632228B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/50—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by aesthetic components not otherwise provided for, e.g. decorative trim, partition walls or covers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/28—Cover glass
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
    • F21S43/26—Refractors, transparent cover plates, light guides or filters not provided in groups F21S43/235 - F21S43/255

Definitions

  • the present invention relates to a new aspect and / or optical processing element for a lighting or signaling device of a motor vehicle.
  • a headlight type housing for a motor vehicle generally comprises a housing closed at the front by a window and at the rear by a cap.
  • This box houses one or more mirrors each carrying a lamp.
  • This mirror can be tilted horizontally and / or vertically to vary the orientation of the beam for adjustment purposes.
  • it is however necessary to leave between the anterior edge of the lower cheek (and if necessary of the upper cheek) of the mirror a relatively large space which, when the projector is off, reveals a dark area between the lower cheek of the mirror and the glass, both of which are generally shiny and neutral in color.
  • This space is masked in a known manner by placing a painted or varnished or metallized cover or cover between the reflector and the glass having an appearance similar to that of the mirror, the best result being obtained with metallization.
  • This metallization is generally carried out by aluminizing, which gives the part an appearance close to that of the reflector.
  • the surface of the hubcap is then fragile and can be easily scratched or scratched, or allow fingerprints to appear, during its handling.
  • the cost of a varnishing or aluminizing is high.
  • this extension defined with the window base a difficult to clean cavity, in which dirt comes accumulate. This accumulation creates a completely horizontal aesthetic undesirable horizontal area between the body and the glass from the foot of the glass.
  • the closing light of which comprises several illuminating surfaces located at the right of several cavities each housing one or more lamps, one very generally notes, when the lights are off, an aspect of the non-homogeneous indicator in the transition region between these illuminating surfaces, caused in particular by the presence of the partitions between these cavities and by arrangements for fixing the sight glass on these partitions.
  • the present invention aims in particular to overcome these drawbacks by proposing an element for a lighting or signaling device for a motor vehicle which generally makes it possible to obtain good uniformity in the appearance of headlamps or blocks of signaling lights when 'they are extinct, while being very fragile and extremely economical to manufacture.
  • the subject of the present invention is an element for a motor vehicle lighting or signaling device, characterized in that it consists at least partially of a transparent plastic material charged with light reflecting particles.
  • the light-reflecting particles are preferably made of glitter of shiny, opaque and neutral-tinted metal, such as aluminum.
  • the element constitutes a projector glass. At least part of a peripheral region of the glass, not crossed by the beam of the projector, is made of transparent plastic material loaded with light-reflecting particles, the rest of the glass being made of transparent plastic material which is not charged.
  • this part of the peripheral region of the ice is superimposed on a foot of ice and preferably located on the inner side of the foot of ice.
  • the element advantageously comprises the same plastic material for the charged and uncharged parts.
  • the element constitutes an intermediate masking element for a projector, extending between a front edge of a mirror of the projector and a lens of the projector and distinct from the mirror and the lens.
  • It is preferably made entirely of transparent plastic material loaded with reflective particles.
  • the element constitutes an indicator for at least one signaling light. It has a low density of reflective particles in an area of the indicator forming the illuminating surface of the light (s), and a high density of particles in an area of the indicator not forming an illuminating surface.
  • the indicator element comprises a high density of particles in an area of the indicator located at the transition between two adjacent illuminating surfaces.
  • the transparent plastic can in this case be colored.
  • the element constitutes a reflector for a traffic light with a large angular range of emission.
  • the invention also provides projectors and signaling lights equipped with elements as defined above.
  • a window 1 for a motor vehicle headlamp is made of transparent plastic and comprises a generally flat part 2 for the passage of light and a re-entrant peripheral foot of glass 3 intended for mounting the glass on the edge of the front opening of a housing (not shown).
  • Part 2 of the glass is intended to be placed at a certain distance, of the order of one to a few centimeters, in front of the front edge of a reflector (not shown), to allow adjustment of the inclination of this last and therefore the orientation of the generated beam.
  • the window 1 comprises in this case, in one piece, an extension 4 upwards, intended to ensure a generally smooth transition with the part of the vehicle body (generally the front cover) located at the - above the projector.
  • the extension 4 and the adjacent part of the foot of ice 3 define a practically inaccessible space which, as indicated above, becomes dirty over time.
  • the extension 4 is made of transparent plastic, identical to that of the rest of the glass, but loaded with light-reflecting particles.
  • the extension 4 has, when the projector is turned off, a very close to that of the rest of the ice, that is to say shiny and neutral, thanks to the reflection of light on the particles in random directions.
  • the fouling of the aforementioned cavity is hidden from the outside because the reflecting particles have clouded the extension 4.
  • the glass equipped with its extension can be produced either by a single molding step with two materials, one for the optical part 2 and the base 3 and the other, preferably identical but loaded with the particles, for the extension 4 , or by molding in two successive stages with the two materials.
  • FIG 2 there is shown a glass which differs from that of Figure 1 in that the upper region of the glass base 3 is also made of transparent plastic loaded with reflective particles.
  • the appearance of the switched off projector is also improved when there is a large space between the upper edge of the extension 4 and the surrounding bodywork.
  • the extension 4 is made of transparent plastic material not loaded with reflecting particles, and only the upper part of the glass base 3 is loaded with reflecting particles.
  • This embodiment may prove to be appropriate when the cavity defined between the upper part of the foot of the window 3 and the extension 4 is well sheltered and not very subject to fouling. In this case, the upper part of the foot of the glass ensures a certain homogeneity of appearance of the region of the projector which can be observed through the extension 4.
  • FIG. 4 there is shown a window which does not have an extension 4.
  • the entire base of the window 3 is made of plastic loaded with reflective particles.
  • We obtain in this way a much more homogeneous appearance of the projector turned off in the transition region between the central part 2 of the lens and the front edge of the reflector. More precisely, when the projector is observed from a bird's-eye view, the dark parts situated below the lower part of the ice-cream foot are masked by the ice-cream foot, and at the same time the latter has a surface appearance similar to that of the lower cheek of the reflector located nearby.
  • the plastic material used for both the transparent parts and those loaded with reflective particles is preferably that which is conventionally used for plastic lenses.
  • the weld between the parts of the glass molded successively is of good quality.
  • the choice between making the glass by bi-material molding or by molding in two stages will be made according to the nature of the part to be produced.
  • the reflective particles are preferably aluminum flakes. Their size can vary within fairly wide limits.
  • the form factor (ratio between the largest dimension and the smallest dimension) of the flakes can also vary widely, as can the density of the flakes.
  • a loaded plastic material according to the invention makes it possible to eliminate the problems of brittleness, and generally of surface defect, of the varnished, aluminized or painted parts of the prior art, the particles reflective being embedded in the material.
  • the cost price of parts produced according to the invention is significantly lower than that of a varnishing or aluminizing.
  • the masking of the space located between the reflector and the central part 2 of the lens 1 is carried out starting from an ordinary lens made of plastic or even glass, and by overmolding on the pre-existing ice a thick layer 5 of transparent plastic material charged with reflective particles.
  • this layer is produced on the inside face (turned downwards) of the upper part of the ice cream base 3.
  • This layer can also be produced on the outside face of the ice cream base. It is also of course possible to coat the entire base of ice 3 with this layer loaded with reflective particles.
  • FIG. 6 Another embodiment, illustrated in FIG. 6, consists in producing on a pre-existing glass preferably made of plastic a peripheral skirt 6, extending at a certain distance from the glass base 3 inside of it , this skirt playing the role of transition mask between the glass and the front edges of the reflector. In this embodiment, these edges penetrate into the peripheral channel defined between the glass base 3 and the skirt 6, without being in contact with these elements, so as to preserve a possibility of movement when beam adjustments are made.
  • the skirt 6 is preferably produced by overmolding, the assembly obtained being in one piece.
  • a hubcap 7 is conventionally used in itself intended again to minimize the discontinuities in appearance between the glass and the front edges of the metallized reflector.
  • This hubcap conventionally has in itself a section in the general shape of a "V", and is placed in the transition region between glass and mirror. According to the invention, it is produced entirely by injection molding of a transparent plastic material loaded with reflective particles.
  • FIG. 8 illustrates an application of the present invention to the production of an indicator light 10 for a block of signaling lights, in particular at the rear of a vehicle.
  • the block of signaling lights comprises several lamps received in respective cavities defined by a common base. This base is capped by a closing indicator made in one or more parts.
  • This indicator light 10 includes illuminating areas 9 corresponding to the various signaling functions, these illuminating areas being separated by transition zones 9 having no optical role. It is in these transition zones that the indicator is fixed, by gluing or the like, on partitions or the like forming part of the base, and the conventional light unit therefore suffers from a lack of uniformity of appearance when the functions are off, because the fixing arrangements appear behind the indicator in the form of darker lines.
  • the areas of the indicator forming illuminating surfaces are made of a transparent plastic material, possibly colored when the indicator must give the light functions their charged color. with a low density of reflective particles, while the transition zones 9 are made of the same plastic material, but having a higher density of reflective particles.
  • the low density of the flakes present at the level of the illuminating surfaces favors the dispersion of the light flux over a wide angular extent, which is generally desirable with regard to the regulations in terms of photometry.
  • the high density of glitter present in the transition zones 8 opacifies the indicator sufficiently to mask the dark lines linked to the attachment of the indicator.
  • FIG. 9 Another application of the invention is illustrated in FIG. 9. It consists in making a rear luminous flux recuperator of a signaling light in a transparent plastic material charged with reflective particles.
  • a rear luminous flux recuperator of a signaling light in a transparent plastic material charged with reflective particles.
  • the light rays emitted by the lamp towards the recuperator are reflected by the metallic flakes in a random manner, the reflected rays being distributed regularly around an average direction of emission.
  • Such a recuperator therefore opens the angle of emission of the light beam. It is therefore particularly suitable for signaling devices which must have a large augular range of emission, such as flashing lights.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)
  • Optical Elements Other Than Lenses (AREA)

Claims (20)

  1. Element (1; 7; 10; 11) für die Beleuchtungs- oder Signalanlage eines Kraftfahrzeugs, dadurch gekennzeichnet, daß es wenigstens teilweise aus einem transparenten Kunststoff mit Zusatz von lichtreflektierenden Teilchen besteht.
  2. Element nach Anspruch 1 , dadurch gekennzeichnet, daß die lichtreflektierenden Teilchen aus Plättchen aus glänzendem, lichtundurchlässigem Metall mit neutralem Farbton bestehen.
  3. Element nach Anspruch 2 , dadurch gekennzeichnet, daß es sich bei dem glänzenden, lichtundurchlässigen Metall mit neutralem Farbton um Aluminium handelt.
  4. Element nach einem der Ansprüche 1 bis 3 , dadurch gekennzeichnet,, daß es eine Streuscheibe (1) für einen Scheinwerfer bildet und daß wenigstens ein Teil (4; 3; 6) eines Umfangsbereichs der Streuscheibe, durch den das Lichtbündel des Scheinwerfers nicht hindurchgeht, aus transparentem Kunststoff mit Zusatz von lichtreflektierenden Teilchen besteht, während der Rest der Streuscheibe aus transparentem Kunststoff ohne Zusatz besteht.
  5. Element nach Anspruch 4 , dadurch gekennzeichnet,, daß der besagte Teil des Umfangsbereichs der Streuscheibe aus einer Verlängerung (4) der Streuscheibe nach oben für den Anschluß an ein benachbartes Karosserieteil besteht.
  6. Element nach Anspruch 4 , dadurch gekennzeichnet, daß der besagte Teil des Umfangsbereichs der Streuscheibe aus einem einwärts gebogenen Teil besteht, der einen Scheibenfuß (3) bildet.
  7. Element nach Anspruch 4 , dadurch gekennzeichnet, daß der besagte Teil des Umfangsbereichs der Streuscheibe aus einer einwärts gebogenen Einfassung (6) besteht, die sich in das Innere eines Scheibenfußes erstreckt und zusammen mit diesem einen Umfangsraum bildet, in den eine Vorderkante des Reflektors eingesetzt werden kann, wobei die besagte einwärts gebogene Einfassung eine Zwischenabdeckung zwischen Streuscheibe und Reflektor bildet.
  8. Element nach einem der Ansprüche 1 bis 3 , dadurch gekennzeichnet, daß der besagte Teil (5) des Umfangsbereichs der Streuscheibe einen Scheibenfuß (3) überlagert.
  9. Element nach Anspruch 8 , dadurch gekennzeichnet, daß der besagte Teil (5) des Umfangsbereichs der Streuscheibe an der Innenseite des Scheibenfußes angeordnet ist.
  10. Element nach einem der Ansprüche 1 bis 3 , dadurch gekennzeichnet, daß es den gleichen Kunststoff für die Teile mit und ohne Zusatz umfaßt.
  11. Element nach einem der Ansprüche 1 bis 3 , dadurch gekennzeichnet, daß es ein Zwischenabdeckelement (7) für einen Scheinwerfer bildet, das sich zwischen einer Vorderkante eines Spiegels des Scheinwerfers und einer Streuscheibe (1) des Scheinwerfers erstreckt und getrennt vom Spiegel und von der Streuscheibe ausgeführt ist.
  12. Element nach Anspruch 11 , dadurch gekennzeichnet, daß es vollständig aus transparentem Kunststoff mit Zusatz von reflektierenden Teilchen ausgeführt ist.
  13. Element nach einem der Ansprüche 1 bis 3 , dadurch gekennzeichnet, daß es ein Leuchtenglas (10) für wenigstens eine Signalleuchte bildet, daß es eine niedrige Dichte an reflektierenden Teilchen in einem Bereich (9) des Leuchtenglases enthält, der das Leuchtfeld des oder der Signalleuchten bildet, und daß es eine hohe Teilchendichte in einem Bereich (8) des Leuchtenglases enthält, der kein Leuchtfeld bildet.
  14. Element nach Anspruch 13 für eine Mehrzahl von Signalleuchten, die jeweils eine Aufnahme umfassen und durch Zwischenwände getrennt sind, dadurch gekennzeichnet, daß es eine hohe Teilchendichte in einem Bereich (8) des Leuchtenglases enthält, der am Übergang zwischen zwei angrenzenden Leuchtfeldern angeordnet ist.
  15. Element nach Anspruch 13 oder 14 , dadurch gekennzeichnet, daß der transparente Kunststoff eingefärbt ist.
  16. Element nach einem der Ansprüche 1 bis 3 , dadurch gekennzeichnet, daß es einen Reflektor (11) für eine Signalleuchte mit großer Abstrahlwinkelausdehnung bildet.
  17. Kraftfahrzeugscheinwerfer , dadurch gekennzeichnet, daß er als Streuscheibe ein Element nach einem der Ansprüche 4 bis 10 enthält.
  18. Kraftfahrzeugscheinwerfer , dadurch gekennzeichnet, daß er als Abdeckelement ein Element nach Anspruch 11 oder 12 enthält.
  19. Signalleuchte für Kraftfahrzeuge , dadurch gekennzeichnet, daß sie als Leuchtenglas ein Element nach einem der Ansprüche 13 bis 15 enthält.
  20. Signalleuchte für Kraftfahrzeuge , dadurch gekennzeichnet, daß sie als Reflektor ein Element nach Anspruch 16 enthält.
EP94401475A 1993-07-01 1994-06-29 Stylistisches oder optisches Element- mit glänzendem Aussehen und neutraler Farbe- für Kfz-Beleuchtungs- oder Anzeige-Scheinwerfer Expired - Lifetime EP0632228B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9308061A FR2708334B1 (fr) 1993-07-01 1993-07-01 Elément de style ou d'optique, d'aspect brillant et de teinte neutre, pour éclairage ou signalisation automobile.
FR9308061 1993-07-01

Publications (2)

Publication Number Publication Date
EP0632228A1 EP0632228A1 (de) 1995-01-04
EP0632228B1 true EP0632228B1 (de) 1997-01-02

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EP94401475A Expired - Lifetime EP0632228B1 (de) 1993-07-01 1994-06-29 Stylistisches oder optisches Element- mit glänzendem Aussehen und neutraler Farbe- für Kfz-Beleuchtungs- oder Anzeige-Scheinwerfer

Country Status (4)

Country Link
EP (1) EP0632228B1 (de)
DE (1) DE69401314T2 (de)
ES (1) ES2097011T3 (de)
FR (1) FR2708334B1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29809618U1 (de) * 1998-05-28 1998-07-30 Hella Kg Hueck & Co Scheinwerfer für Fahrzeuge, insbesondere Zusatzscheinwerfer für Kraftfahrzeuge
DE19807409A1 (de) * 1998-02-21 1999-08-26 Volkswagen Ag Scheinwerfer oder Leuchte

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4434667B4 (de) * 1994-09-28 2006-12-28 Automotive Lighting Reutlingen Gmbh Scheinwerfer für Fahrzeuge
DE19519654A1 (de) * 1995-05-30 1996-12-05 Bosch Gmbh Robert Scheinwerfer für Fahrzeuge
FR2765665B1 (fr) * 1997-07-07 1999-09-24 Valeo Vision Projecteur de vehicule automobile equipe d'un enjoliveur entre glace et miroir
FR2814531B1 (fr) * 2000-09-25 2002-12-06 Valeo Vision Dispositif d'eclairage ou de signalisation pour vehicule automobile d'aspect ameliore
DE10333606B4 (de) * 2003-07-24 2006-07-20 GM Global Technology Operations, Inc., Detroit Kraftfahrzeug-Leuchte
DE102007033711A1 (de) 2007-07-17 2009-01-22 Volkswagen Ag Fahrzeugleuchtvorrichtung mit einem Zusatzreflektor zum seitlichen Umlenken eines Lichtteils einer Lichtquelle
DE102007033709A1 (de) 2007-07-17 2009-01-22 Volkswagen Ag Fahrzeugleuchtvorrichtung mit einer lichtstreuenden Zwischenlichtscheibe
DE102007033706B4 (de) 2007-07-17 2014-05-28 Volkswagen Ag Fahrzeugleuchtvorrichtung mit einer dreidimensionalen mehrfarbigen Zwischenlichtscheibe
IT1402358B1 (it) * 2010-10-05 2013-08-30 Borromini S R L Procedimento di stampaggio ad iniezione ed apparecchiatura per la realizzazione di detto procedimento
FR2989449B1 (fr) * 2012-04-11 2018-05-11 Valeo Vision Element transparent pour dispositif d'eclairage et/ou de signalisation de vehicule, comprenant un moyen anti-retrait, et moule de fabrication d'un tel element
FR3007821B1 (fr) * 2013-06-28 2018-04-20 Automotive Lighting Rear Lamps France Dispositif a eclairage indirect pour feu arriere de vehicule automobile
DE102013226570A1 (de) * 2013-12-19 2015-06-25 Bayerische Motoren Werke Aktiengesellschaft Frontscheinwerfer für ein Kraftfahrzeug
FR3016684B1 (fr) 2014-01-21 2019-05-10 Psa Automobiles Sa. Dispositif d'eclairage de vehicule, en particulier d'eclairage diurne, et vehicule ainsi equipe
FR3145964A1 (fr) * 2023-02-17 2024-08-23 Psa Automobiles Sa Glace extérieure de couverture pour bloc optique de véhicule automobile

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2564945B1 (fr) * 1984-05-25 1988-07-15 Cibie Projecteurs Perfectionnements aux projecteurs de vehicules automobiles.
FR2675093B1 (fr) * 1991-04-12 1995-09-29 Valeo Vision Bloc optique a enjoliveur perfectionne, notamment pour vehicule automobile.

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19807409A1 (de) * 1998-02-21 1999-08-26 Volkswagen Ag Scheinwerfer oder Leuchte
DE29809618U1 (de) * 1998-05-28 1998-07-30 Hella Kg Hueck & Co Scheinwerfer für Fahrzeuge, insbesondere Zusatzscheinwerfer für Kraftfahrzeuge

Also Published As

Publication number Publication date
DE69401314T2 (de) 1997-05-28
FR2708334A1 (fr) 1995-02-03
DE69401314D1 (de) 1997-02-13
ES2097011T3 (es) 1997-03-16
EP0632228A1 (de) 1995-01-04
FR2708334B1 (fr) 1995-10-20

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