SG26354G - Capacitive incremental position measurement and motion control - Google Patents
Capacitive incremental position measurement and motion controlInfo
- Publication number
- SG26354G SG26354G SG1995903571A SG1995903571A SG26354G SG 26354 G SG26354 G SG 26354G SG 1995903571 A SG1995903571 A SG 1995903571A SG 1995903571 A SG1995903571 A SG 1995903571A SG 26354 G SG26354 G SG 26354G
- Authority
- SG
- Singapore
- Prior art keywords
- motion control
- position measurement
- incremental position
- capacitive incremental
- capacitive
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R13/00—Arrangements for displaying electric variables or waveforms
- G01R13/02—Arrangements for displaying electric variables or waveforms for displaying measured electric variables in digital form
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
- G01D5/244—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing characteristics of pulses or pulse trains; generating pulses or pulse trains
- G01D5/245—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing characteristics of pulses or pulse trains; generating pulses or pulse trains using a variable number of pulses in a train
- G01D5/2451—Incremental encoders
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
- G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
- G01D5/24—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying capacitance
- G01D5/241—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying capacitance by relative movement of capacitor electrodes
- G01D5/2412—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying capacitance by relative movement of capacitor electrodes by varying overlap
- G01D5/2415—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying capacitance by relative movement of capacitor electrodes by varying overlap adapted for encoders
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/197,800 US4893071A (en) | 1988-05-24 | 1988-05-24 | Capacitive incremental position measurement and motion control |
Publications (1)
Publication Number | Publication Date |
---|---|
SG26354G true SG26354G (en) | 1995-09-18 |
Family
ID=22730820
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SG1995903571A SG26354G (en) | 1988-05-24 | 1989-05-17 | Capacitive incremental position measurement and motion control |
Country Status (11)
Country | Link |
---|---|
US (1) | US4893071A (fr) |
EP (2) | EP0586023B1 (fr) |
JP (1) | JPH083426B2 (fr) |
KR (1) | KR0151854B1 (fr) |
AU (1) | AU603952B2 (fr) |
CA (1) | CA1324195C (fr) |
DE (2) | DE68920204T2 (fr) |
DK (1) | DK249189A (fr) |
ES (2) | ES2065377T3 (fr) |
HK (2) | HK188695A (fr) |
SG (1) | SG26354G (fr) |
Families Citing this family (77)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5280222A (en) * | 1989-06-01 | 1994-01-18 | Papst Motoren Gmbh & Co. Kg | Apparatus and method for controlling brushless electric motors and position encoders and indicating position thereof |
US5239307A (en) * | 1989-10-10 | 1993-08-24 | Micro Encoder Inc. | Method and apparatus for sensing of position |
CA2041231C (fr) * | 1991-04-25 | 1999-02-16 | Marius Cloutier | Mesure dynamique et sans contact de deplacement ou de permittivite a l'aide d'un capteur capacitif |
CH685214A5 (fr) * | 1991-10-15 | 1995-04-28 | Hans Ulrich Meyer | Capteur capacitif de position. |
US5237307A (en) * | 1991-11-27 | 1993-08-17 | The United States Of America As Represented By The United States Department Of Energy | Non-contact tamper sensing by electronic means |
JP2509067B2 (ja) * | 1992-03-13 | 1996-06-19 | エイ・ティ・アンド・ティ・コーポレーション | デバイス作製方法および導電膜の共鳴周波数測定装置 |
US5337353A (en) * | 1992-04-01 | 1994-08-09 | At&T Bell Laboratories | Capacitive proximity sensors |
SE9202005L (sv) * | 1992-06-29 | 1993-12-20 | Johansson Ab C E | Skalsystem för absolutmätning |
US5307693A (en) * | 1993-01-21 | 1994-05-03 | At&T Bell Laboratories | Force-sensing system, including a magnetically mounted rocking element |
US5463388A (en) * | 1993-01-29 | 1995-10-31 | At&T Ipm Corp. | Computer mouse or keyboard input device utilizing capacitive sensors |
NL9301674A (nl) * | 1993-09-28 | 1995-04-18 | Stichting Tech Wetenschapp | Capacitieve positieopnemer. |
US5434504A (en) * | 1993-10-01 | 1995-07-18 | International Business Machines Corporation | Position sensors for linear motors including plural symmetrical fluxes generated by a planar drive coil and received by planar sense coils being colinear along an axis of motion |
CH689190A5 (fr) * | 1993-10-19 | 1998-11-30 | Hans Ulrich Meyer | Instrument de mesure de longueurs ou d'angles. |
KR0151447B1 (ko) * | 1994-09-16 | 1998-11-02 | 김광호 | 스피커 폰의 통화로 자동 형성 전화장치 및 그 제어방법 |
US5828142A (en) * | 1994-10-03 | 1998-10-27 | Mrs Technology, Inc. | Platen for use with lithographic stages and method of making same |
DE19511646C2 (de) * | 1995-03-30 | 1999-01-07 | Fife Gmbh | Vorrichtung zum berührungslosen Erfassen der Lage eines laufenden Materialbandes |
US5620573A (en) * | 1995-04-28 | 1997-04-15 | Lucent Technologies Inc. | Reduced stress tungsten deposition |
EP0743508A2 (fr) * | 1995-05-16 | 1996-11-20 | Mitutoyo Corporation | Capteur de position employant un courant d'induction |
JP3625530B2 (ja) * | 1995-06-12 | 2005-03-02 | ヒューレット・パッカード・カンパニー | 位置検出装置及び位置検出方法 |
US5847690A (en) * | 1995-10-24 | 1998-12-08 | Lucent Technologies Inc. | Integrated liquid crystal display and digitizer having a black matrix layer adapted for sensing screen touch location |
US5973494A (en) * | 1996-05-13 | 1999-10-26 | Mitutoyo Corporation | Electronic caliper using a self-contained, low power inductive position transducer |
US6002250A (en) * | 1996-05-13 | 1999-12-14 | Mitutoyo Corporation | Electronic linear scale using a self-contained, low-power inductive position transducer |
US5808435A (en) * | 1996-05-28 | 1998-09-15 | Kmy Instruments | Micropositioning device for disk head testing system |
JPH1038508A (ja) * | 1996-07-22 | 1998-02-13 | Hewlett Packard Co <Hp> | 位置検出装置及び位置決め装置 |
US5731960A (en) * | 1996-09-19 | 1998-03-24 | Bay Networks, Inc. | Low inductance decoupling capacitor arrangement |
US5818039A (en) * | 1996-12-18 | 1998-10-06 | Yaskawa Electric America, Inc. | Incremental optical positioning sensor |
US5886519A (en) * | 1997-01-29 | 1999-03-23 | Mitutoyo Corporation | Multi-scale induced current absolute position transducer |
DE19803642A1 (de) * | 1998-02-02 | 1999-09-30 | Reinhard Wiesemann | Kapazitiver Sensor |
JP3047231B1 (ja) * | 1999-04-02 | 2000-05-29 | 士郎 嶋原 | レゾルバ |
US6492911B1 (en) * | 1999-04-19 | 2002-12-10 | Netzer Motion Sensors Ltd. | Capacitive displacement encoder |
US6175169B1 (en) | 1999-05-03 | 2001-01-16 | Ralph L. Hollis, Jr. | Closed-loop planar linear motor with integral monolithic three-degree-of-freedom AC-magnetic position/orientation sensor |
JP3620998B2 (ja) * | 1999-06-08 | 2005-02-16 | 株式会社ニレコ | 導電性物体の端部検出装置 |
DE20011966U1 (de) * | 1999-07-13 | 2000-10-26 | Indihar, Maximilian, 68219 Mannheim | Elektrischer Sensor zur Messung einer Kapazitätsänderung eines Kondensators und Umsetzung in ein Spannungssignal sowie Verwendung desselben |
DE19954267A1 (de) * | 1999-07-30 | 2001-08-02 | Univ Ilmenau Tech | Verfahren zur automatischen Einstellung der Schaltschwelle kapazitiver sowie induktiver Näherungssensoren |
TWI248718B (en) * | 1999-09-02 | 2006-02-01 | Koninkl Philips Electronics Nv | Displacement device |
CN1155794C (zh) | 1999-12-02 | 2004-06-30 | 株式会社三丰 | 静电电容式变位检测装置 |
DE10029306C2 (de) * | 2000-06-14 | 2003-07-31 | Physik Instr Pi Gmbh & Co | Anordnung zur temperaturkompensierten, mehrdimensionalen Mikropositionierung von zueinander lagedefinierten optischen Komponenten |
ATE398768T1 (de) * | 2000-09-18 | 2008-07-15 | Heidenhain Gmbh Dr Johannes | Vorrichtung und verfahren zur erfassung der rotationsbewegung eines um eine achse drehbar gelagerten elementes |
KR20030033351A (ko) * | 2001-10-22 | 2003-05-01 | 엘지이노텍 주식회사 | 비유전 물질 감지 장치 |
US7142500B2 (en) * | 2002-01-11 | 2006-11-28 | Hewlett-Packard Development Company, L.P. | Sensor with varying capacitance based on relative position between objects |
US7057163B2 (en) * | 2002-06-25 | 2006-06-06 | Chong-Hin Chee | Optical position sensing device |
US20040155534A1 (en) * | 2003-02-07 | 2004-08-12 | Engwall Mats Anders | Structure integrating gas support bearing and a planar electromagnetic drive and levitation system |
US7148074B1 (en) * | 2003-09-22 | 2006-12-12 | Sun Microsystems, Inc. | Method and apparatus for using a capacitor array to measure alignment between system components |
US7135827B1 (en) | 2004-04-15 | 2006-11-14 | Lampson Clark E | Sawyer motor forcer with integrated drive electronics |
KR20070011577A (ko) | 2004-05-07 | 2007-01-24 | 마그네모션, 인코포레이티드 | 단일 경로를 기반으로 하는 작용기들을 이용한 3차원 동작 |
US20060256089A1 (en) * | 2005-05-10 | 2006-11-16 | Tyco Electronics Canada Ltd. | System and method for providing virtual keys in a capacitive technology based user input device |
US7583006B2 (en) * | 2005-07-26 | 2009-09-01 | Siimpel Corporation | MEMS digital linear actuator |
AU2006277725B2 (en) | 2005-08-05 | 2011-06-09 | Magway Limited | The control of a linear motor |
DE102005039152A1 (de) * | 2005-08-17 | 2007-02-22 | Robert Bosch Gmbh | Mechanische Trägereinrichtung sowie Messgerät mit einer mechanischen Trägereinrichtung |
JP2007093287A (ja) * | 2005-09-27 | 2007-04-12 | Tietech Co Ltd | リニアモータ |
US7656168B2 (en) * | 2005-11-28 | 2010-02-02 | Avago Technologies General Ip (Singapore) Pte. Ltd. | Neutralizing electromagnetic noise for a capacitive input device |
US7504794B2 (en) * | 2006-11-29 | 2009-03-17 | Chiba Precision Co., Ltd. | Planar motor |
EP2132868A1 (fr) * | 2007-04-03 | 2009-12-16 | STMicroelectronics S.r.l. | Detection de position capacitive dans un micromoteur electrostatique |
JP5171395B2 (ja) * | 2007-07-31 | 2013-03-27 | 京セラ株式会社 | ステージの位置変動検出装置およびこれを備えた搬送装置 |
CN100487361C (zh) * | 2007-09-06 | 2009-05-13 | 浙江大学 | 基于电容测量原理的平面电容传感器 |
US8084969B2 (en) * | 2007-10-01 | 2011-12-27 | Allegro Microsystems, Inc. | Hall-effect based linear motor controller |
US8363324B2 (en) | 2008-01-10 | 2013-01-29 | Digital Imaging Systems Gmbh | Lens positioning system |
US7936144B2 (en) * | 2008-03-06 | 2011-05-03 | Allegro Microsystems, Inc. | Self-calibration algorithms in a small motor driver IC with an integrated position sensor |
JP5153457B2 (ja) * | 2008-05-29 | 2013-02-27 | 京セラ株式会社 | ステージの位置変動検出装置およびこれを備えた搬送装置 |
US8125385B2 (en) * | 2008-08-13 | 2012-02-28 | Los Alamos National Security, Llc | Apparatus and method for phase fronts based on superluminal polarization current |
US9032880B2 (en) | 2009-01-23 | 2015-05-19 | Magnemotion, Inc. | Transport system powered by short block linear synchronous motors and switching mechanism |
US8616134B2 (en) | 2009-01-23 | 2013-12-31 | Magnemotion, Inc. | Transport system powered by short block linear synchronous motors |
US20110169520A1 (en) * | 2010-01-14 | 2011-07-14 | Mks Instruments, Inc. | Apparatus for measuring minority carrier lifetime and method for using the same |
DE112012005322B4 (de) | 2011-12-20 | 2022-02-10 | Mitsubishi Electric Corporation | Drehwinkel-Detektiervorrichtung |
CN102853753B (zh) * | 2012-09-05 | 2014-10-08 | 和瑞电子(中山)有限公司 | 一种测试smt贴片元件电极共平面的装置及测试方法 |
WO2014055335A1 (fr) | 2012-10-05 | 2014-04-10 | Rudolph Technologies, Inc. | Système de moteur plan à rendement amélioré |
WO2014101031A1 (fr) * | 2012-12-27 | 2014-07-03 | Siemens Aktiengesellschaft | Codeur capacitif linéaire et procédé de détermination de position |
CN105813886B (zh) | 2013-09-21 | 2018-04-03 | 麦克纳莫绅有限公司 | 用于包装和其它用途的线性电机运输 |
US9939932B2 (en) * | 2014-03-21 | 2018-04-10 | Advanced Sensor Technology Limited | Position sensing device and method using self-capacitance |
US11410481B2 (en) | 2014-07-09 | 2022-08-09 | Cummins-Allison Corp. | Systems, methods and devices for processing batches of coins utilizing coin imaging sensor assemblies |
US9508208B1 (en) * | 2014-07-25 | 2016-11-29 | Cummins Allison Corp. | Systems, methods and devices for processing coins with linear array of coin imaging sensors |
JP6457250B2 (ja) * | 2014-11-19 | 2019-01-23 | 日本電産サンキョー株式会社 | 位置検出装置、駆動装置、および位置検出用スケール部材 |
WO2016152504A1 (fr) * | 2015-03-20 | 2016-09-29 | アルプス電気株式会社 | Dispositif d'entrée rotatif |
US9829347B2 (en) * | 2015-06-03 | 2017-11-28 | Hiwin Mikrosystem Corp. | Capacitance sensation unit of plane position measurement device |
KR101701318B1 (ko) * | 2015-06-16 | 2017-02-01 | 하이윈 마이크로시스템 코포레이션 | 평면 위치 측정 장치의 정전용량 감지 유닛 |
CN105628060A (zh) * | 2016-03-08 | 2016-06-01 | 汉得利(常州)电子股份有限公司 | 压电式超声波传感器单元及其应用 |
DE102016206087A1 (de) * | 2016-04-12 | 2017-10-12 | Robert Bosch Gmbh | Werkstückträgersystem |
Family Cites Families (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US27436A (en) * | 1860-03-13 | Kaitge | ||
AU411601B2 (en) * | 1966-05-31 | 1971-03-12 | Alden Sawyer | Magnetic positioning device |
US3593115A (en) * | 1969-06-30 | 1971-07-13 | Ibm | Capacitive voltage divider |
DE2017188A1 (de) * | 1970-02-04 | 1971-08-19 | Zentronik Veb K | Kapazitive Abtasteinrichtung |
US3784897A (en) * | 1972-02-17 | 1974-01-08 | Landis Tool Co | Capacitor transducer |
US3860918A (en) * | 1973-06-25 | 1975-01-14 | Becton Dickinson Co | Capacitive position transducer |
US3961318A (en) * | 1975-01-17 | 1976-06-01 | Inductosyn Corporation | Electrostatic position-measuring transducer |
SE411392B (sv) * | 1977-12-09 | 1979-12-17 | Inst Mikrovagsteknik Vid Tekni | Metanordning for kapacitiv bestemning av det inbordes leget hos tva relativt varandra rorliga delar |
US4177421A (en) * | 1978-02-27 | 1979-12-04 | Xerox Corporation | Capacitive transducer |
JPS55144505A (en) * | 1979-04-28 | 1980-11-11 | Sony Corp | Magnetic scale device |
DE3020411C2 (de) * | 1980-05-27 | 1983-09-22 | Hans Ulrich St.Sulpice Waadt Meyer | Vorrichtung zum Messen der Verschiebung zweier Körper |
US4374383A (en) * | 1980-12-22 | 1983-02-15 | International Business Machines Corporation | Capacitive transducer for sensing a home position |
US4404560A (en) * | 1981-05-07 | 1983-09-13 | International Business Machines Corporation | Capacitive transducer for providing precise angular positional information |
CH648929A5 (fr) * | 1982-07-07 | 1985-04-15 | Tesa Sa | Dispositif de mesure capacitif de deplacement. |
US4631524A (en) * | 1983-05-02 | 1986-12-23 | Computer Memories, Inc. | Capacitive encoder having multiple precision outputs |
US4654581A (en) * | 1983-10-12 | 1987-03-31 | Hewlett-Packard Company | Capacitive mask aligner |
DE3338108A1 (de) * | 1983-10-20 | 1985-05-02 | Robert 5446 Engeln Wolff | Digitale messvorrichtung fuer drehwinkelabhaengige groessen |
JPS6093311A (ja) * | 1983-10-27 | 1985-05-25 | Mitsutoyo Mfg Co Ltd | 容量式変位測定機 |
JPS6093312A (ja) * | 1983-10-27 | 1985-05-25 | Mitsutoyo Mfg Co Ltd | 容量式変位測定機 |
DE3340782C2 (de) * | 1983-11-11 | 1985-12-05 | Mauser-Werke Oberndorf Gmbh, 7238 Oberndorf | Kapazitive Längen- und Winkelmeßeinrichtung |
US4654571A (en) * | 1985-09-16 | 1987-03-31 | Hinds Walter E | Single plane orthogonally movable drive system |
EP0226716A3 (fr) * | 1985-09-16 | 1989-01-11 | Hewlett-Packard Company | Système capteur capacitif de position |
CH666122A5 (fr) * | 1986-04-10 | 1988-06-30 | Hans Ulrich Meyer | Capteur capacitif de position. |
CH670306A5 (fr) * | 1986-11-13 | 1989-05-31 | Hans Ulrich Meyer |
-
1988
- 1988-05-24 US US07/197,800 patent/US4893071A/en not_active Expired - Fee Related
-
1989
- 1989-04-26 CA CA000597818A patent/CA1324195C/fr not_active Expired - Fee Related
- 1989-05-04 AU AU34042/89A patent/AU603952B2/en not_active Ceased
- 1989-05-17 DE DE68920204T patent/DE68920204T2/de not_active Expired - Fee Related
- 1989-05-17 EP EP93203004A patent/EP0586023B1/fr not_active Expired - Lifetime
- 1989-05-17 DE DE68926355T patent/DE68926355T2/de not_active Expired - Fee Related
- 1989-05-17 ES ES89304973T patent/ES2065377T3/es not_active Expired - Lifetime
- 1989-05-17 EP EP89304973A patent/EP0344942B1/fr not_active Expired - Lifetime
- 1989-05-17 SG SG1995903571A patent/SG26354G/en unknown
- 1989-05-17 ES ES93203004T patent/ES2086871T3/es not_active Expired - Lifetime
- 1989-05-22 KR KR1019890006814A patent/KR0151854B1/ko not_active IP Right Cessation
- 1989-05-23 DK DK249189A patent/DK249189A/da not_active Application Discontinuation
- 1989-05-24 JP JP1129049A patent/JPH083426B2/ja not_active Expired - Fee Related
-
1995
- 1995-12-14 HK HK188695A patent/HK188695A/xx not_active IP Right Cessation
-
1996
- 1996-09-26 HK HK179896A patent/HK179896A/xx not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
EP0586023A3 (fr) | 1994-04-13 |
ES2086871T3 (es) | 1996-07-01 |
DK249189D0 (da) | 1989-05-23 |
AU3404289A (en) | 1989-11-30 |
DE68926355T2 (de) | 1996-11-28 |
HK179896A (en) | 1996-10-04 |
AU603952B2 (en) | 1990-11-29 |
KR0151854B1 (ko) | 1998-12-15 |
JPH083426B2 (ja) | 1996-01-17 |
ES2065377T3 (es) | 1995-02-16 |
EP0586023A2 (fr) | 1994-03-09 |
KR890017537A (ko) | 1989-12-16 |
EP0344942A3 (fr) | 1991-07-31 |
DE68926355D1 (de) | 1996-05-30 |
DE68920204T2 (de) | 1995-05-11 |
EP0344942B1 (fr) | 1994-12-28 |
DE68920204D1 (de) | 1995-02-09 |
JPH0224512A (ja) | 1990-01-26 |
US4893071A (en) | 1990-01-09 |
CA1324195C (fr) | 1993-11-09 |
DK249189A (da) | 1989-11-27 |
HK188695A (en) | 1995-12-22 |
EP0344942A2 (fr) | 1989-12-06 |
EP0586023B1 (fr) | 1996-04-24 |
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