NO20006647L - Anordning for påvisning av metaller - Google Patents

Anordning for påvisning av metaller

Info

Publication number
NO20006647L
NO20006647L NO20006647A NO20006647A NO20006647L NO 20006647 L NO20006647 L NO 20006647L NO 20006647 A NO20006647 A NO 20006647A NO 20006647 A NO20006647 A NO 20006647A NO 20006647 L NO20006647 L NO 20006647L
Authority
NO
Norway
Prior art keywords
magnetic field
components
metal object
detector
processor
Prior art date
Application number
NO20006647A
Other languages
English (en)
Other versions
NO327748B1 (no
NO20006647D0 (no
Inventor
Mark Nicholas Keene
Original Assignee
Secr Defence
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 Secr Defence filed Critical Secr Defence
Publication of NO20006647D0 publication Critical patent/NO20006647D0/no
Publication of NO20006647L publication Critical patent/NO20006647L/no
Publication of NO327748B1 publication Critical patent/NO327748B1/no

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
    • G01V3/08—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Remote Sensing (AREA)
  • Geology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Electromagnetism (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Geophysics (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
  • Investigating Or Analyzing Materials Using Thermal Means (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)
NO20006647A 1998-06-27 2000-12-22 Anordning for pavisning av en metallgjenstand og anvendelse av denne, og tilsvarende fremgangsmate NO327748B1 (no)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB9813889.4A GB9813889D0 (en) 1998-06-27 1998-06-27 Apparatus for detecting metals
PCT/GB1999/001847 WO2000000848A1 (en) 1998-06-27 1999-06-10 Apparatus for detecting metals

Publications (3)

Publication Number Publication Date
NO20006647D0 NO20006647D0 (no) 2000-12-22
NO20006647L true NO20006647L (no) 2001-02-27
NO327748B1 NO327748B1 (no) 2009-09-14

Family

ID=10834492

Family Applications (1)

Application Number Title Priority Date Filing Date
NO20006647A NO327748B1 (no) 1998-06-27 2000-12-22 Anordning for pavisning av en metallgjenstand og anvendelse av denne, og tilsvarende fremgangsmate

Country Status (11)

Country Link
US (1) US6541966B1 (no)
EP (1) EP1092163B1 (no)
JP (1) JP4173638B2 (no)
AT (1) ATE266212T1 (no)
AU (1) AU4281899A (no)
CA (1) CA2335499C (no)
DE (1) DE69917030T2 (no)
GB (2) GB9813889D0 (no)
NO (1) NO327748B1 (no)
WO (1) WO2000000848A1 (no)
ZA (1) ZA200007370B (no)

Families Citing this family (103)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU9181298A (en) 1997-10-06 1999-04-27 Andrew Takacs Gameboard, especially tableboard for ball games
FR2806506B1 (fr) * 2000-03-14 2003-07-18 Commissariat Energie Atomique Microsysteme magnetometrique et inclinometrique pour la surveillance d'objets de valeur
AU773887B2 (en) * 2000-05-02 2004-06-10 Johns Hopkins University, The Steerable three-dimensional magnetic field sensor system for detection and classification of metal targets
US6724191B1 (en) * 2000-05-09 2004-04-20 Admiralty Corporation Systems and methods useful for detecting presence and/or location of various materials
JP4527273B2 (ja) * 2000-12-13 2010-08-18 株式会社レイディック 方位測定方式
GB0124887D0 (en) 2001-10-17 2001-12-05 Qinetiq Ltd Metal detection apparatus
US7106194B2 (en) * 2001-11-16 2006-09-12 The Johns Hopkins University Method for metal object identification using a three-dimensional steerable magnetic field antenna
US6949930B2 (en) * 2002-04-08 2005-09-27 Witten Technologies, Inc. Time domain induction method and apparatus for locating buried objects in a medium by inducing and measuring transient eddy currents
US6720764B2 (en) 2002-04-16 2004-04-13 Thomas Energy Services Inc. Magnetic sensor system useful for detecting tool joints in a downhold tubing string
AUPS319402A0 (en) * 2002-06-24 2002-07-18 Thorlock International Limited Monitoring probes for nuclear quadrupole resonance measurements (#12)
ES2198217B1 (es) * 2002-07-04 2005-03-16 Surgi-Wire, S.L. Equipo para la deteccion de productos quirurgicos.
US7154266B2 (en) * 2003-01-17 2006-12-26 Quantum Magnetics, Inc. Screening method and apparatus
US7239134B2 (en) 2003-01-17 2007-07-03 Mednovus, Inc. Screening method and apparatus
US7315166B2 (en) 2003-01-17 2008-01-01 Mednovus, Inc. Magnetic resonance imaging screening method and apparatus
US6956369B2 (en) * 2003-01-17 2005-10-18 Mednovus, Inc. Screening method and apparatus
US20070055142A1 (en) * 2003-03-14 2007-03-08 Webler William E Method and apparatus for image guided position tracking during percutaneous procedures
US7126378B2 (en) 2003-12-17 2006-10-24 Rambus, Inc. High speed signaling system with adaptive transmit pre-emphasis
US7397848B2 (en) 2003-04-09 2008-07-08 Rambus Inc. Partial response receiver
US7092472B2 (en) * 2003-09-16 2006-08-15 Rambus Inc. Data-level clock recovery
EP1615554B1 (en) 2003-04-15 2017-12-20 Philips Intellectual Property & Standards GmbH Method and arrangement for influencing magnetic particles and detecting interfering material
US7521932B2 (en) * 2003-05-06 2009-04-21 The Penn State Research Foundation Method and system for adjusting the fundamental symmetric mode of coupled high temperature superconductor coils
US7069362B2 (en) * 2003-05-12 2006-06-27 International Business Machines Corporation Topology for shared memory computer system
US7126323B1 (en) 2003-07-25 2006-10-24 Admiralty Corporation Systems and methods for synchronous detection of signals
US7295085B2 (en) * 2003-08-21 2007-11-13 E.I. Du Pont De Nemours And Company Process for making high temperature superconductor devices each having a line oriented in a spiral fashion
US6924644B2 (en) * 2003-09-12 2005-08-02 The United States Of America As Represented By The Secretary Of The Navy Radiofrequency surface detection coil
US7332910B2 (en) * 2003-11-24 2008-02-19 E.I. Du Pont De Nemours And Company Frequency detection system comprising circuitry for adjusting the resonance frequency of a high temperature superconductor self-resonant coil
US20070245374A1 (en) * 2003-11-24 2007-10-18 Inventec Corporation Video program subtitle tex recording method and system
US7301344B2 (en) 2003-11-24 2007-11-27 E.I. Du Pont De Nemours & Co. Q-damping circuit including a high temperature superconductor coil for damping a high temperature superconductor self-resonant coil in a nuclear quadrupole resonance detection system
WO2005059582A1 (en) * 2003-12-15 2005-06-30 E.I. Dupont De Nemours And Company The use of multiple sensors in a nuclear quadrupole resonance detection system to improve measurement speed
US7233164B2 (en) * 2003-12-17 2007-06-19 Rambus Inc. Offset cancellation in a multi-level signaling system
WO2005078469A1 (en) * 2004-02-04 2005-08-25 E.I. Dupont De Nemours And Company The use of two or more sensors to detect different nuclear quadrupole resonance signals of a target compound
EP1711840A2 (en) * 2004-02-04 2006-10-18 E.I.Du pont de nemours and company Nqr rf coil assembly comprising two or more coils which may be made from hts
US7265549B2 (en) 2004-04-30 2007-09-04 E. I. Du Pont De Nemours And Company Scanning a band of frequencies using an array of high temperature superconductor sensors tuned to the same frequency
US7279897B2 (en) * 2004-04-30 2007-10-09 E. I. Du Pont De Nemours And Company Scanning a band of frequencies using an array of high temperature superconductor sensors tuned to different frequencies
WO2006073452A2 (en) * 2004-04-30 2006-07-13 E.I. Dupont De Nemours And Company Methods and apparatus for scanning a band of frequencies by nqr using an array of high temperature superconductor sensors
US7088103B2 (en) * 2004-05-11 2006-08-08 White's Electronics, Inc. Metal detector having a plurality of phase delay discrimination regions with corresponding selectable exception spaces therein
US20060022670A1 (en) * 2004-07-31 2006-02-02 Mednovus, Inc. Magnetic resonance screening portal with combination sensing
US7239223B2 (en) * 2004-10-18 2007-07-03 Mednovus, Inc. Enhancement magnetizer for magnetic resonance imaging screening
US7148692B2 (en) 2004-10-20 2006-12-12 White's Electronics, Inc. Detector for non-ferrous metals with reduced false positive responses
EP1825288A2 (en) 2004-12-03 2007-08-29 E.I. Dupont De Nemours And Company Matual decoupling of excitation and receive coils of a nuclear quadrupole resonance detection system
DE102005057054B4 (de) * 2004-12-09 2016-03-03 Okm Gmbh Tragbares handgeführtes geophysikalisches Ortungsgerät
WO2006065929A1 (en) * 2004-12-13 2006-06-22 E. I. Du Pont De Nemours And Company Metal shield alarm in a nuclear quadrupole resonance/x-ray contraband detection system
CN100527168C (zh) * 2004-12-14 2009-08-12 皇家飞利浦电子股份有限公司 确定磁性粒子的空间分布的方法
US7170288B2 (en) * 2004-12-22 2007-01-30 Fullerton Larry W Parametric nuclear quadrupole resonance spectroscopy system and method
US20060139025A1 (en) * 2004-12-24 2006-06-29 Mednovus, Inc. Saturation-resistant magnetoresistive sensor for ferromagnetic screening
US7295107B2 (en) * 2004-12-30 2007-11-13 Mednovus, Inc. Ferromagnetic detection pillar
US20060145691A1 (en) * 2004-12-30 2006-07-06 Mednovus, Inc. Ferromagnetic detection pillar and variable aperture portal
WO2006081615A1 (en) * 2005-02-01 2006-08-10 Qrsciences Pty Ltd Method and apparatus for detecting significant shielded volumes
ZA200707829B (en) * 2005-03-09 2009-08-26 Anglo Operations Ltd Low temperature squidtransient electromagnetic receiver system
US10036249B2 (en) * 2005-05-31 2018-07-31 Caterpillar Inc. Machine having boundary tracking system
US7734866B2 (en) * 2005-08-04 2010-06-08 Rambus Inc. Memory with address-differentiated refresh rate to accommodate low-retention storage rows
US20070057786A1 (en) * 2005-09-13 2007-03-15 Mednovus, Inc. Ferromagnetic threat warning system
US8303505B2 (en) * 2005-12-02 2012-11-06 Abbott Cardiovascular Systems Inc. Methods and apparatuses for image guided medical procedures
FR2902197B1 (fr) * 2006-06-07 2008-07-25 Univ Bretagne Occidentale Etab Procede de localisation d'un objet magnetique, produit programme d'ordinateur, moyen de stockage et dispositif de localisation correspondants
EP2038680A1 (en) * 2006-06-19 2009-03-25 Minelab Electronics PTY LTD Metal detector with improved detection capabilities
US7397239B2 (en) * 2006-07-11 2008-07-08 Ge Security, Inc. Passenger screening system and method
GB2441346B (en) 2006-09-01 2011-04-13 Qinetiq Ltd Metal object detecting apparatus
US20080281187A1 (en) * 2006-10-18 2008-11-13 Mednovus, Inc. Ferromagnetic threat detection method apparatus
US20100315080A1 (en) * 2006-10-24 2010-12-16 Andrew Duncan metal detector
WO2008125621A1 (en) * 2007-04-13 2008-10-23 Alert Metalguard Aps A method, a device and a system for preventing false alarms in a theft-preventing system
US20080294036A1 (en) * 2007-04-23 2008-11-27 Device Evolutions, Llc Surgical Metal Detection Apparatus and Methods
JP4913680B2 (ja) * 2007-06-22 2012-04-11 株式会社リコー カール矯正装置および画像形成装置
CA2769888A1 (en) * 2008-08-05 2010-02-11 Mr Technology Inc. Differential gradiometric magnetometer, system and method of use
DE102009010943A1 (de) * 2009-02-27 2010-09-16 Hilti Aktiengesellschaft Betriebsverfahren und Spulenanordnung für einen magnetischen Sensor zur Detektion metallischer Objekte in einem Untergrund
US8436608B2 (en) * 2009-09-21 2013-05-07 General Electric Company Eddy current inspection system and method
WO2011044915A1 (en) * 2009-10-16 2011-04-21 Alert Metalguard Aps An electronic anti-theft protection system
DE102009058549A1 (de) 2009-12-17 2011-06-22 ThyssenKrupp Fördertechnik GmbH, 45143 Detektionseinrichtung für eine Bandfördereinrichtung und Verfahren zur Detektion von elektrischen leitfähigen Fremdkörpern im Fördergut einer Bandfördereinrichtung
US8842035B2 (en) * 2010-04-08 2014-09-23 L-3 Communications Security And Detection Systems, Inc. Sensor head
US9272157B2 (en) * 2010-05-02 2016-03-01 Nervive, Inc. Modulating function of neural structures near the ear
DE102010028719A1 (de) * 2010-05-07 2011-11-10 Robert Bosch Gmbh Suchgerät
US8854247B2 (en) * 2010-08-20 2014-10-07 Niitek, Inc. Metal detector and ground-penetrating radar hybrid head and manufacturing method thereof
DE102010043010C5 (de) * 2010-10-27 2017-10-05 Ifm Electronic Gmbh Induktiver Näherungsschalter
US8952699B2 (en) 2011-01-04 2015-02-10 Pnqr Llc Nuclear quadrupole resonance system and method for interfacing with a subject material
DE102011077068A1 (de) 2011-06-07 2012-12-13 Hilti Aktiengesellschaft Verfahren und Vorrichtung zum Detektieren eines leitfähigen Objektes
DE102011079261A1 (de) * 2011-07-15 2013-01-17 Hilti Aktiengesellschaft Vorrichtung und Verfahren zum Detektieren einer Stromleitung in einem Untergrund
AU2013200451C1 (en) * 2011-11-03 2014-04-10 Minelab Electronics Pty Limited Method for separating target signals from unwanted signals in a metal detector
US9488747B2 (en) 2012-03-23 2016-11-08 Seesoon, Inc. Gradient antenna coils and arrays for use in locating systems
US8970219B2 (en) * 2012-05-17 2015-03-03 Louis Marlo Nel Search coil assembly and system for metal detection
US20130307533A1 (en) * 2012-05-18 2013-11-21 Metrasens Limited Security system and method of detecting contraband items
WO2014055732A2 (en) 2012-10-04 2014-04-10 Whaley Brian A Shieldings for metal detector heads and manufacturing methods thereof
GB201219097D0 (en) 2012-10-24 2012-12-05 Metrasens Ltd Apparatus for detecting ferromagnetic objects at a protected doorway assembly
EP2725352A1 (en) * 2012-10-27 2014-04-30 Valerian Goroshevskiy Apparatus for non-contact metallic constructions assessment
GB2521398B (en) * 2013-12-18 2020-05-20 Roke Manor Res Limited Techniques for co-siting a metal detector with another detector
US9733379B2 (en) * 2014-06-19 2017-08-15 Metrotech Corporation Line locator with a metal detector
CL2014001897A1 (es) * 2014-07-18 2014-09-22 Cadetech S A Un sistema de monitoreo para la deteccion en forma automatica de elementos ferromagneticos ocultos en la carga de mineral, durante la carga y/o descarga de un contenedor, dicho sistema comprende al menos un sensor de campo magnetico, un computador, un canal de comunicacion de corto alcance, un visualizador, un canal de comunicacion de largo alcance, una fuente de energia, y sensores auxiliares.
EP3234656B1 (en) 2014-12-18 2024-02-07 Metrasens Limited Security system and method of detecting contraband items
GB201602652D0 (en) 2016-02-15 2016-03-30 Metrasens Ltd Improvements to magnetic detectors
DE102016108988B4 (de) * 2016-05-13 2019-05-29 Heinrich Hirdes Gmbh Verfahren und Vorrichtung zum Auffinden elektrisch leitfähiger Gegenstände unter einer Bodenoberfläche
WO2018098229A1 (en) * 2016-11-22 2018-05-31 The Research Institute At Nationwide Children's Hospital Apparatus and method for metal-type differentiation
EP3385758A1 (de) * 2017-04-05 2018-10-10 HILTI Aktiengesellschaft Vorrichtung und verfahren zum detektieren von elektrisch leitenden messobjekten in einem untergrund
US10686336B2 (en) 2017-05-30 2020-06-16 Wireless Advanced Vehicle Electrification, Inc. Single feed multi-pad wireless charging
DE102017111722A1 (de) 2017-05-30 2018-12-06 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Verfahren und vorrichtung zum charakterisieren eines objekts, verfahren und vorrichtung zum bestimmen einer zusammensetzung eines objekts sowie verfahren und vorrichtung zum erkennen eines elektrisch leitfähigen und/oder magnetisch permeablen objekts
DK3727623T3 (da) 2017-12-19 2022-07-18 Lego As Legesystem og fremgangsmåde til detektering af legetøjselementer
US11462943B2 (en) 2018-01-30 2022-10-04 Wireless Advanced Vehicle Electrification, Llc DC link charging of capacitor in a wireless power transfer pad
CN113227816B (zh) 2018-10-26 2025-01-21 伊沃夫科技有限公司 具有威胁检测和辨别功能的人员检查
JP7434778B2 (ja) * 2019-09-20 2024-02-21 住友ベークライト株式会社 液体注入ポート
JP7594304B2 (ja) * 2020-04-08 2024-12-04 株式会社 Integral Geometry Science 磁気応答分布可視化装置、セキュリティ検査システム及び磁気応答分布可視化方法
CN112914772A (zh) * 2020-12-04 2021-06-08 长沙微笑美齿智能科技有限公司 一种抗干扰牙齿种植体探测方法及其探测装置
US20220291412A1 (en) * 2021-03-12 2022-09-15 Christopher Frank Eckman Metal detecting sensor array for discriminating between different objects
NO348074B1 (en) 2021-05-20 2024-07-15 Argeo Robotics As Adaptive steering of AUV
TWI850836B (zh) * 2022-11-07 2024-08-01 佳世達科技股份有限公司 超音波探頭的金屬探測方法及超音波探頭的金屬探測系統
CN115755190B (zh) * 2022-11-15 2025-12-23 中国科学院空天信息创新研究院 无人机三分量全航空瞬变电磁探测系统及方法
JP2024118967A (ja) * 2023-02-21 2024-09-02 株式会社島津製作所 磁気検出装置

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3826973A (en) * 1973-01-10 1974-07-30 Benson R Electromagnetic gradiometer
FR2564601B1 (fr) * 1984-05-15 1987-02-06 Petroles Cie Francaise Appareil d'exploration magnetique pour trou de forage
CA1267192A (en) 1987-04-24 1990-03-27 John E. Mcfee Ferrous object locator and classifier
US5119816A (en) * 1990-09-07 1992-06-09 Sam Technology, Inc. EEG spatial placement and enhancement method
US5122744A (en) * 1990-10-09 1992-06-16 Ibm Corporation Gradiometer having a magnetometer which cancels background magnetic field from other magnetometers
US5629626A (en) * 1994-07-12 1997-05-13 Geo-Centers, Inc. Apparatus and method for measuring buried ferromagnetic objects with a high accuracy of position and in synchronization with a sync pulse provided by a global positioning system
DE4436078A1 (de) 1994-10-10 1996-04-11 Dornier Gmbh Bildgebendes hochauflösendes Sensorsystem zu Detektion, Ortung und Identifizierung von metallischen Objekten
US5552705A (en) * 1995-06-01 1996-09-03 Keller; George V. Non-obtrusive weapon detection system and method for discriminating between a concealed weapon and other metal objects
US5842986A (en) 1995-08-16 1998-12-01 Proton Sciences Corp. Ferromagnetic foreign body screening method and apparatus
US5642045A (en) * 1995-08-18 1997-06-24 International Business Machines Corporation Magnetic field gradiometer with improved correction circuits
JPH0984777A (ja) * 1995-09-25 1997-03-31 Toshiba Corp 生体磁場計測装置
US6204667B1 (en) * 1998-03-18 2001-03-20 Geophex, Ltd. Electromagnetic gradiometer having a primary detector and a plurality of secondary detectors

Also Published As

Publication number Publication date
EP1092163A1 (en) 2001-04-18
US6541966B1 (en) 2003-04-01
GB0029648D0 (en) 2001-01-17
ATE266212T1 (de) 2004-05-15
JP2003517572A (ja) 2003-05-27
ZA200007370B (en) 2002-03-11
DE69917030D1 (de) 2004-06-09
GB9813889D0 (en) 1998-08-26
CA2335499C (en) 2005-03-29
NO327748B1 (no) 2009-09-14
DE69917030T2 (de) 2005-04-28
CA2335499A1 (en) 2000-01-06
GB2357853B (en) 2003-01-22
WO2000000848A1 (en) 2000-01-06
JP4173638B2 (ja) 2008-10-29
GB2357853A (en) 2001-07-04
EP1092163B1 (en) 2004-05-06
AU4281899A (en) 2000-01-17
NO20006647D0 (no) 2000-12-22

Similar Documents

Publication Publication Date Title
NO20006647D0 (no) Anordning for påvisning av metaller
WO2008025937A3 (en) Metal object detecting apparatus
CA2481803A1 (en) Detection of ferromagnetic objects approaching a magnet
CA2367732A1 (en) Electromagnetic wave generating source probing device, method therefor and analyzing method therefor
US20100315080A1 (en) metal detector
CY1106942T1 (el) Συστημα και μεθοδος για τη μετρηση της σχετικης θεσης ενος αντικειμενου σε σχεση με ενα σημειο αναφορας
GB0031216D0 (en) Measurement of stress
US6586938B1 (en) Metal detector method and apparatus
MY143920A (en) Enhancement of eddy current based measurement capabilities
CN112639536A (zh) 包括静磁传感器的便携式探测系统
ATE270777T1 (de) Verfahren und vorrichtung zur in-situ messung des abstandes zwischen zwei elementen in einer rohrleitung
DE50013642D1 (de) Verfahren und vorrichtung zur in situ-ermittlung des umwandlungsgrads einer nichtmagnetischen phase in eine ferromagnetische phase eines metallischen werkstücks
DE60114355D1 (de) Waffendetektoranlage
EP0775989A3 (en) Coin detection device and associated method
KR20180007612A (ko) 멀티 어레이 기반의 홀 센서를 이용한 상자성 물체의 위치 측정 장치 및 이를 이용한 방법
SE0303610D0 (sv) Metod och anordning för förbättring av mätnoggrannheten vid elektromagnetisk mätning av dimensioner och andra egenskaper hos ett mätobjekt
DE69923857D1 (de) Verfahren und vorrichtung zum prüfen von bimetallischen münzen
JP2920798B2 (ja) 硬貨判別装置
WO2003056353A3 (en) Compact, autonomous robotic detection and identification sensor system of unexploded ordnance site remediation
RU2559796C2 (ru) Универсальный вихретоковый импульсный металлоискатель
EP1065529A3 (en) Method of detecting foreign matter and apparatus therefor
JP3001707U (ja) 金属判別装置
SE9901480D0 (sv) Metalldetektor
JP2001133560A (ja) 金属探知コイル及び金属の探知方法
JPH04198888A (ja) 誘導送信式埋設管検知方法

Legal Events

Date Code Title Description
MK1K Patent expired