FR2386050A1 - Dispositif d'identification d'objets - Google Patents
Dispositif d'identification d'objetsInfo
- Publication number
- FR2386050A1 FR2386050A1 FR7809309A FR7809309A FR2386050A1 FR 2386050 A1 FR2386050 A1 FR 2386050A1 FR 7809309 A FR7809309 A FR 7809309A FR 7809309 A FR7809309 A FR 7809309A FR 2386050 A1 FR2386050 A1 FR 2386050A1
- Authority
- FR
- France
- Prior art keywords
- identification device
- object identification
- automatic identification
- interrogation circuit
- antenna
- 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.)
- Granted
Links
- 230000005540 biological transmission Effects 0.000 abstract 1
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L25/00—Recording or indicating positions or identities of vehicles or trains or setting of track apparatus
- B61L25/02—Indicating or recording positions or identities of vehicles or trains
- B61L25/04—Indicating or recording train identities
- B61L25/043—Indicating or recording train identities using inductive tags
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L25/00—Recording or indicating positions or identities of vehicles or trains or setting of track apparatus
- B61L25/02—Indicating or recording positions or identities of vehicles or trains
- B61L25/04—Indicating or recording train identities
- B61L25/045—Indicating or recording train identities using reradiating tags
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/74—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems
- G01S13/75—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems using transponders powered from received waves, e.g. using passive transponders, or using passive reflectors
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/74—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems
- G01S13/75—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems using transponders powered from received waves, e.g. using passive transponders, or using passive reflectors
- G01S13/751—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems using transponders powered from received waves, e.g. using passive transponders, or using passive reflectors wherein the responder or reflector radiates a coded signal
- G01S13/753—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems using transponders powered from received waves, e.g. using passive transponders, or using passive reflectors wherein the responder or reflector radiates a coded signal using frequency selective elements, e.g. resonator
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR 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
- G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
- G06K19/0672—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with resonating marks
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR 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
- G06K7/08—Methods or arrangements for sensing record carriers, e.g. for reading patterns by means detecting the change of an electrostatic or magnetic field, e.g. by detecting change of capacitance between electrodes
- G06K7/082—Methods or arrangements for sensing record carriers, e.g. for reading patterns by means detecting the change of an electrostatic or magnetic field, e.g. by detecting change of capacitance between electrodes using inductive or magnetic sensors
- G06K7/083—Methods or arrangements for sensing record carriers, e.g. for reading patterns by means detecting the change of an electrostatic or magnetic field, e.g. by detecting change of capacitance between electrodes using inductive or magnetic sensors inductive
- G06K7/086—Methods or arrangements for sensing record carriers, e.g. for reading patterns by means detecting the change of an electrostatic or magnetic field, e.g. by detecting change of capacitance between electrodes using inductive or magnetic sensors inductive sensing passive circuit, e.g. resonant circuit transponders
-
- G—PHYSICS
- G07—CHECKING-DEVICES
- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C9/00—Individual registration on entry or exit
- G07C9/20—Individual registration on entry or exit involving the use of a pass
- G07C9/28—Individual registration on entry or exit involving the use of a pass the pass enabling tracking or indicating presence
-
- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/01—Detecting movement of traffic to be counted or controlled
- G08G1/017—Detecting movement of traffic to be counted or controlled identifying vehicles
Landscapes
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- Mechanical Engineering (AREA)
- Theoretical Computer Science (AREA)
- Artificial Intelligence (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Radar Systems Or Details Thereof (AREA)
- Train Traffic Observation, Control, And Security (AREA)
Abstract
L'invention concerne l'identification automatique d'objets. Le dispositif de l'invention comprend un circuit d'interrogation 13 qui attaque une antenne d'émission/réception 15 par l'intermédiaire d'un duplexeur 14. Un dispositif répondeur 4, en couplage électromagnétique avec l'antenne 15, comprend un certain nombre de résonateurs 71 , 72 , ...7n qui fournissent une réponse de résonance caractéristique, lorsque le circuit d'interrogation 13 émet un signal à balayage de fréquence. Application à l'identification automatique de wagons.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3437477A JPS53120295A (en) | 1977-03-30 | 1977-03-30 | Subject discrimination device |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2386050A1 true FR2386050A1 (fr) | 1978-10-27 |
FR2386050B1 FR2386050B1 (fr) | 1982-12-17 |
Family
ID=12412385
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7809309A Granted FR2386050A1 (fr) | 1977-03-30 | 1978-03-30 | Dispositif d'identification d'objets |
Country Status (6)
Country | Link |
---|---|
US (1) | US4209783A (fr) |
JP (1) | JPS53120295A (fr) |
CA (1) | CA1112340A (fr) |
DE (1) | DE2813753C2 (fr) |
FR (1) | FR2386050A1 (fr) |
GB (1) | GB1577011A (fr) |
Families Citing this family (78)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4532511A (en) * | 1979-10-12 | 1985-07-30 | Lemelson Jerome H | Automatic vehicle identification system and method |
US4292637A (en) * | 1979-12-19 | 1981-09-29 | Rca Corporation | Interrogating radar for use with tagged targets |
US5132687A (en) * | 1980-02-13 | 1992-07-21 | Canadian National | Electronic identification system |
US5196846A (en) * | 1980-02-13 | 1993-03-23 | Brockelsby William K | Moving vehicle identification system |
US4937581A (en) * | 1980-02-13 | 1990-06-26 | Eid Electronic Identification Systems Ltd. | Electronic identification system |
US5164732A (en) * | 1980-02-13 | 1992-11-17 | Eid Electronic Identification Systems Ltd. | Highway vehicle identification system with high gain antenna |
ZA81888B (en) * | 1980-02-13 | 1982-03-31 | Sensory Systems Lab | Electronic identification system |
JPS56119868A (en) * | 1980-02-27 | 1981-09-19 | Toshiba Corp | Object discriminator |
JPS60171475A (ja) * | 1984-02-15 | 1985-09-04 | アイデンティフィケ−ション・デバイセス・インコ−ポレ−テッド | 識別システム |
US4654658A (en) * | 1984-08-03 | 1987-03-31 | Walton Charles A | Identification system with vector phase angle detection |
SE8404876L (sv) * | 1984-09-28 | 1986-05-21 | Bengt Larsson | Identifieringssystem |
AU564509B2 (en) * | 1984-10-09 | 1987-08-13 | X-Cyte Inc. | Phase-encoded transponder interrogation |
GB8432807D0 (en) * | 1984-12-31 | 1985-02-06 | Emx International Ltd | Loop data link |
US4656472A (en) * | 1985-01-23 | 1987-04-07 | Walton Charles A | Proximity identification system with power aided identifier |
US4747120A (en) * | 1985-08-13 | 1988-05-24 | Digital Products Corporation | Automatic personnel monitoring system |
US4752776A (en) * | 1986-03-14 | 1988-06-21 | Enguvu Ag/Sa/Ltd. | Identification system |
US4792965A (en) * | 1987-01-29 | 1988-12-20 | Morgan Harvey L | Oscillator system for detecting a selected one of a plurality of tuned circuits |
US5144314A (en) * | 1987-10-23 | 1992-09-01 | Allen-Bradley Company, Inc. | Programmable object identification transponder system |
US5485154A (en) * | 1987-12-04 | 1996-01-16 | Magellan Corporation (Australia) Pty. Ltd. | Communication device and method(s) |
US5302954A (en) * | 1987-12-04 | 1994-04-12 | Magellan Corporation (Australia) Pty. Ltd. | Identification apparatus and methods |
US5023901A (en) * | 1988-08-22 | 1991-06-11 | Vorec Corporation | Surveillance system having a voice verification unit |
US5266926A (en) * | 1991-05-31 | 1993-11-30 | Avid Marketing, Inc. | Signal transmission and tag power consumption measurement circuit for an inductive reader |
US5204681A (en) * | 1991-09-24 | 1993-04-20 | Gordian Holding Corporation | Radio frequency automatic identification system |
US5473330A (en) * | 1993-02-01 | 1995-12-05 | Motorola, Inc. | Tagging system having resonant frequency shift compensation |
DE4336504C1 (de) * | 1993-10-26 | 1995-03-02 | Siemens Ag | Mit akustischen Oberflächenwellen arbeitende Identifizierungsmarke |
US7002475B2 (en) * | 1997-12-31 | 2006-02-21 | Intermec Ip Corp. | Combination radio frequency identification transponder (RFID tag) and magnetic electronic article surveillance (EAS) tag |
US7123129B1 (en) * | 1995-08-14 | 2006-10-17 | Intermec Ip Corp. | Modulation of the resonant frequency of a circuit using an energy field |
US6107910A (en) | 1996-11-29 | 2000-08-22 | X-Cyte, Inc. | Dual mode transmitter/receiver and decoder for RF transponder tags |
US5986382A (en) | 1997-08-18 | 1999-11-16 | X-Cyte, Inc. | Surface acoustic wave transponder configuration |
US6114971A (en) | 1997-08-18 | 2000-09-05 | X-Cyte, Inc. | Frequency hopping spread spectrum passive acoustic wave identification device |
US6208062B1 (en) | 1997-08-18 | 2001-03-27 | X-Cyte, Inc. | Surface acoustic wave transponder configuration |
US6060815A (en) | 1997-08-18 | 2000-05-09 | X-Cyte, Inc. | Frequency mixing passive transponder |
US5870022A (en) | 1997-09-30 | 1999-02-09 | Interactive Technologies, Inc. | Passive infrared detection system and method with adaptive threshold and adaptive sampling |
DE69815640T2 (de) * | 1997-11-28 | 2003-12-04 | Matsushita Electric Industrial Co., Ltd. | Verfahren und Gerät zur Detektion von magnetostriktiven Resonatoren sowie Verkehrssystem |
GB9816170D0 (en) * | 1997-12-20 | 1998-09-23 | Rover Group | A security system |
AU743933B2 (en) * | 1998-07-20 | 2002-02-07 | Robert Bosch Gmbh | An entry system |
US20020057208A1 (en) * | 1998-09-25 | 2002-05-16 | Fong-Jei Lin | Inventory control system using r.f. object identification |
FR2792136B1 (fr) | 1999-04-07 | 2001-11-16 | St Microelectronics Sa | Transmission en duplex dans un systeme de transpondeurs electromagnetiques |
US6650226B1 (en) | 1999-04-07 | 2003-11-18 | Stmicroelectronics S.A. | Detection, by an electromagnetic transponder reader, of the distance separating it from a transponder |
FR2792132B1 (fr) * | 1999-04-07 | 2001-11-02 | St Microelectronics Sa | Borne de lecture d'un transpondeur electromagnetique fonctionnant en couplage tres proche |
FR2792135B1 (fr) | 1999-04-07 | 2001-11-02 | St Microelectronics Sa | Fonctionnement en complage tres proche d'un systeme a transpondeur electromagnetique |
GB9911878D0 (en) | 1999-05-22 | 1999-07-21 | Marconi Electronic Syst Ltd | Identification tag |
US6307468B1 (en) | 1999-07-20 | 2001-10-23 | Avid Identification Systems, Inc. | Impedance matching network and multidimensional electromagnetic field coil for a transponder interrogator |
US7049935B1 (en) | 1999-07-20 | 2006-05-23 | Stmicroelectronics S.A. | Sizing of an electromagnetic transponder system for a dedicated distant coupling operation |
FR2796781A1 (fr) | 1999-07-20 | 2001-01-26 | St Microelectronics Sa | Dimensionnement d'un systeme a transpondeur electromagnetique pour un fonctionnement en hyperproximite |
DE19953334C2 (de) * | 1999-11-05 | 2002-05-08 | Siemens Ag | Fernauslesbare Identifikationsmarke und Verfahren zum Betrieb mehrerer solcher Identifikationsmarken |
US6496314B1 (en) * | 1999-11-17 | 2002-12-17 | Sony Corporation | Recording/playback apparatus with electric wave transmission |
FR2804557B1 (fr) * | 2000-01-31 | 2003-06-27 | St Microelectronics Sa | Adaptation de la puissance d'emission d'un lecteur de transpondeur electromagnetique |
FR2808942B1 (fr) * | 2000-05-12 | 2002-08-16 | St Microelectronics Sa | Validation de la presence d'un transpondeur electromagnetique dans le champ d'un lecteur a demodulation de phase |
FR2808946A1 (fr) | 2000-05-12 | 2001-11-16 | St Microelectronics Sa | Validation de la presence d'un transpondeur electromagnetique dans le champ d'un lecteur |
FR2808945B1 (fr) | 2000-05-12 | 2002-08-16 | St Microelectronics Sa | Evaluation du nombre de transpondeurs electromagnetiques dans le champ d'un lecteur |
FR2808941B1 (fr) | 2000-05-12 | 2002-08-16 | St Microelectronics Sa | Validation de la presence d'un transpondeur electromagnetique dans le champ d'un lecteur a demodulation d'amplitude |
FR2809235A1 (fr) * | 2000-05-17 | 2001-11-23 | St Microelectronics Sa | Antenne de generation d'un champ electromagnetique pour transpondeur |
FR2809251B1 (fr) * | 2000-05-17 | 2003-08-15 | St Microelectronics Sa | Dispositif de production d'un champ electromagnetique pour transpondeur |
US6859801B1 (en) * | 2000-06-09 | 2005-02-22 | Massachusetts Institute Of Technology | Efficient memoryless protocol for tag identification |
FR2812986B1 (fr) * | 2000-08-09 | 2002-10-31 | St Microelectronics Sa | Detection d'une signature electrique d'un transpondeur electromagnetique |
US20030169169A1 (en) * | 2000-08-17 | 2003-09-11 | Luc Wuidart | Antenna generating an electromagnetic field for transponder |
AU2002361252A1 (en) * | 2002-09-04 | 2004-03-29 | Eta Sa Manufacture Horlogere Suisse | Data transmission system and method using sound waves |
US7453769B2 (en) * | 2003-09-29 | 2008-11-18 | General Dynamics Information Technology, Inc. | Cavitating body sonar system and process |
CA2540596C (fr) * | 2003-09-29 | 2011-11-15 | Ac Capital Management, Inc. | Systeme sonar et procede associe |
JP2009515447A (ja) * | 2005-11-08 | 2009-04-09 | シュライフリング ウント アパラーテバウ ゲゼルシャフト ミット ベシュレンクテル ハフツング | システム状態の無接触検査 |
FR2906630B1 (fr) * | 2006-09-29 | 2009-12-11 | Senseor | Dispositif d'interrogation d'un capteur passif de type a ondes acoustiques de surface. |
US8009050B2 (en) * | 2007-02-02 | 2011-08-30 | Semiconductor Energy Laboratory Co., Ltd. | Wireless system, semiconductor device, and communication device |
EP1956523B1 (fr) * | 2007-02-02 | 2013-05-29 | Semiconductor Energy Laboratory Co., Ltd. | Système d'identification sans fil, dispositif à semi-conducteur, et dispositif de communication |
US7957222B2 (en) * | 2007-10-05 | 2011-06-07 | Honeywell International, Inc. | Acoustic communication and control for seismic sensors |
US8964500B2 (en) * | 2007-10-05 | 2015-02-24 | Honeywell International Inc. | Communication in a seismic sensor array |
US8019549B2 (en) * | 2008-12-10 | 2011-09-13 | Honeywell International Inc. | Event-based power management for seismic sensors |
US20110140842A1 (en) * | 2009-12-15 | 2011-06-16 | Morton Greene | System and method for identifying a genuine printed document |
EP2261840A1 (fr) * | 2009-06-11 | 2010-12-15 | Korea Minting, Security Printing & ID Card Operating Corp. | Appareil pour reconnaître un code de sécurité doté d'une structure EBG |
KR101025822B1 (ko) * | 2009-06-11 | 2011-03-30 | 한국조폐공사 | 전자기 밴드갭 패턴의 보안코드 인식장치 |
US8362902B2 (en) * | 2009-07-24 | 2013-01-29 | Electronics And Telecommunications Research Institute | RFID reader and method for identifying RFID tag thereof and apparatus for analyzing reception power pattern |
JP5285637B2 (ja) * | 2010-02-24 | 2013-09-11 | 公益財団法人鉄道総合技術研究所 | 軌道回路装置 |
DE102010015906A1 (de) * | 2010-03-10 | 2011-09-15 | Schleifring Und Apparatebau Gmbh | Verfahren zur Kompensation von Systemtoleranzen in induktiven Kopplern |
US8027110B1 (en) * | 2010-07-27 | 2011-09-27 | Tdk Corporation | Apparatus for measuring magnetic field of microwave-assisted head |
US9225194B2 (en) * | 2013-04-24 | 2015-12-29 | Cyberonics, Inc. | Implantable medical device charging apparatus having both parallel and series resonators |
KR101943082B1 (ko) * | 2014-01-23 | 2019-04-18 | 한국전자통신연구원 | 무선 전력 송신 장치, 무선 전력 수신 장치, 및 무선 전력 전송 시스템 |
US10411716B2 (en) * | 2016-06-06 | 2019-09-10 | Richwave Technology Corp. | Subsampling motion detector for detecting motion of object under measurement |
CN115081562B (zh) * | 2022-02-24 | 2024-10-01 | 浙江绍兴苏泊尔生活电器有限公司 | 设备状态的判断方法、装置、存储介质及电子装置 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3737911A (en) * | 1968-02-03 | 1973-06-05 | Tokyo Shibaura Electric Co | Object identification system |
FR2176067A1 (fr) * | 1972-03-15 | 1973-10-26 | Ericsson Telefon Ab L M |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3363247A (en) * | 1967-05-05 | 1968-01-09 | Gen Electric | Identification system |
US3705402A (en) * | 1970-05-27 | 1972-12-05 | Hughes Aircraft Co | Secondary radar defruiting system |
US3883868A (en) * | 1973-07-23 | 1975-05-13 | Ronald S Palmer | Sweep frequency control apparatus and method |
US3900829A (en) * | 1973-10-17 | 1975-08-19 | Us Transport | Airport loop detector system |
US4023167A (en) * | 1975-06-16 | 1977-05-10 | Wahlstrom Sven E | Radio frequency detection system and method for passive resonance circuits |
US4069472A (en) * | 1975-12-25 | 1978-01-17 | Tokyo Shibaura Electric Co., Ltd. | Foreground subject-identifying apparatus |
-
1977
- 1977-03-30 JP JP3437477A patent/JPS53120295A/ja active Granted
-
1978
- 1978-03-22 US US05/889,114 patent/US4209783A/en not_active Expired - Lifetime
- 1978-03-23 CA CA299,745A patent/CA1112340A/fr not_active Expired
- 1978-03-29 GB GB12216/78A patent/GB1577011A/en not_active Expired
- 1978-03-30 DE DE2813753A patent/DE2813753C2/de not_active Expired
- 1978-03-30 FR FR7809309A patent/FR2386050A1/fr active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3737911A (en) * | 1968-02-03 | 1973-06-05 | Tokyo Shibaura Electric Co | Object identification system |
FR2176067A1 (fr) * | 1972-03-15 | 1973-10-26 | Ericsson Telefon Ab L M |
Also Published As
Publication number | Publication date |
---|---|
DE2813753C2 (de) | 1985-06-05 |
JPS6130219B2 (fr) | 1986-07-11 |
FR2386050B1 (fr) | 1982-12-17 |
DE2813753A1 (de) | 1978-10-05 |
CA1112340A (fr) | 1981-11-10 |
GB1577011A (en) | 1980-10-15 |
JPS53120295A (en) | 1978-10-20 |
US4209783A (en) | 1980-06-24 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
CD | Change of name or company name | ||
ST | Notification of lapse |