DE3275171D1 - Clutch control system - Google Patents
Clutch control systemInfo
- Publication number
- DE3275171D1 DE3275171D1 DE8282300581T DE3275171T DE3275171D1 DE 3275171 D1 DE3275171 D1 DE 3275171D1 DE 8282300581 T DE8282300581 T DE 8282300581T DE 3275171 T DE3275171 T DE 3275171T DE 3275171 D1 DE3275171 D1 DE 3275171D1
- Authority
- DE
- Germany
- Prior art keywords
- control system
- clutch control
- clutch
- control
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
- B60W30/18—Propelling the vehicle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/02—Conjoint control of vehicle sub-units of different type or different function including control of driveline clutches
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
- B60W30/18—Propelling the vehicle
- B60W30/1819—Propulsion control with control means using analogue circuits, relays or mechanical links
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D48/00—External control of clutches
- F16D48/06—Control by electric or electronic means, e.g. of fluid pressure
- F16D48/066—Control of fluid pressure, e.g. using an accumulator
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D48/00—External control of clutches
- F16D48/06—Control by electric or electronic means, e.g. of fluid pressure
- F16D48/068—Control by electric or electronic means, e.g. of fluid pressure using signals from a manually actuated gearshift linkage
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2500/00—External control of clutches by electric or electronic means
- F16D2500/10—System to be controlled
- F16D2500/104—Clutch
- F16D2500/10406—Clutch position
- F16D2500/10412—Transmission line of a vehicle
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2500/00—External control of clutches by electric or electronic means
- F16D2500/30—Signal inputs
- F16D2500/302—Signal inputs from the actuator
- F16D2500/3026—Stroke
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2500/00—External control of clutches by electric or electronic means
- F16D2500/30—Signal inputs
- F16D2500/302—Signal inputs from the actuator
- F16D2500/3028—Voltage
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2500/00—External control of clutches by electric or electronic means
- F16D2500/30—Signal inputs
- F16D2500/306—Signal inputs from the engine
- F16D2500/3067—Speed of the engine
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2500/00—External control of clutches by electric or electronic means
- F16D2500/30—Signal inputs
- F16D2500/31—Signal inputs from the vehicle
- F16D2500/3108—Vehicle speed
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2500/00—External control of clutches by electric or electronic means
- F16D2500/30—Signal inputs
- F16D2500/314—Signal inputs from the user
- F16D2500/31406—Signal inputs from the user input from pedals
- F16D2500/3144—Accelerator pedal position
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2500/00—External control of clutches by electric or electronic means
- F16D2500/30—Signal inputs
- F16D2500/316—Other signal inputs not covered by the groups above
- F16D2500/3166—Detection of an elapsed period of time
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2500/00—External control of clutches by electric or electronic means
- F16D2500/50—Problem to be solved by the control system
- F16D2500/502—Relating the clutch
- F16D2500/5023—Determination of the clutch wear
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2500/00—External control of clutches by electric or electronic means
- F16D2500/70—Details about the implementation of the control system
- F16D2500/704—Output parameters from the control unit; Target parameters to be controlled
- F16D2500/70402—Actuator parameters
- F16D2500/7041—Position
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2500/00—External control of clutches by electric or electronic means
- F16D2500/70—Details about the implementation of the control system
- F16D2500/706—Strategy of control
- F16D2500/70605—Adaptive correction; Modifying control system parameters, e.g. gains, constants, look-up tables
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2500/00—External control of clutches by electric or electronic means
- F16D2500/70—Details about the implementation of the control system
- F16D2500/706—Strategy of control
- F16D2500/7061—Feed-back
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Automation & Control Theory (AREA)
- Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB8105845 | 1981-02-24 | ||
GB8111079 | 1981-04-08 | ||
GB8130418 | 1981-10-08 |
Publications (1)
Publication Number | Publication Date |
---|---|
DE3275171D1 true DE3275171D1 (en) | 1987-02-26 |
Family
ID=27261121
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE8282300581T Expired DE3275171D1 (en) | 1981-02-24 | 1982-02-05 | Clutch control system |
Country Status (8)
Country | Link |
---|---|
US (1) | US4497397A (de) |
EP (1) | EP0059035B1 (de) |
AU (1) | AU552105B2 (de) |
BR (1) | BR8200902A (de) |
DE (1) | DE3275171D1 (de) |
ES (1) | ES8303632A1 (de) |
MX (1) | MX150261A (de) |
SU (1) | SU1261557A3 (de) |
Families Citing this family (58)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU1725283A (en) * | 1982-08-11 | 1984-02-16 | Automotive Products Plc | Clutch control system |
FR2540647A1 (fr) * | 1983-02-04 | 1984-08-10 | Valeo | Dispositif de pilotage automatique d'embrayage |
FR2543242B1 (fr) * | 1983-03-22 | 1989-03-31 | Renault | Commande de la pression d'alimentation d'un recepteur hydraulique |
US4591038A (en) * | 1983-06-16 | 1986-05-27 | Fujitsu Limited | Automatic clutch control system |
CA1250642A (en) * | 1983-06-30 | 1989-02-28 | Toshihiro Hattori | Method of controlling the starting of a vehicle having automatic clutch |
GB8401822D0 (en) * | 1984-01-24 | 1984-02-29 | Lucas Ind Plc | Clutch control system |
US4558772A (en) * | 1984-08-29 | 1985-12-17 | General Motors Corporation | Electronic control for a starting clutch |
FR2572689B1 (fr) * | 1984-11-07 | 1989-09-15 | Renault | Dispositif d'automatisation d'embrayage |
JPS61169326A (ja) * | 1985-01-21 | 1986-07-31 | Nissan Motor Co Ltd | 4輪駆動車の駆動力配分制御装置 |
JPH06104427B2 (ja) * | 1985-07-05 | 1994-12-21 | 富士通株式会社 | 自動変速機付車両のインチング制御方法 |
JPH0689796B2 (ja) * | 1986-04-30 | 1994-11-14 | 富士重工業株式会社 | 車両用自動クラツチの制御装置 |
JPS6372922A (ja) * | 1986-09-13 | 1988-04-02 | Isuzu Motors Ltd | 自動クラツチ制御装置 |
US4793454A (en) * | 1987-03-13 | 1988-12-27 | Borg-Warner Automotive, Inc. | Continuously variable transmission clutch control system |
JPH0790715B2 (ja) * | 1987-09-29 | 1995-10-04 | 日産自動車株式会社 | 差動制限力制御装置 |
JPH0764221B2 (ja) * | 1987-10-20 | 1995-07-12 | 日産自動車株式会社 | 差動制限力制御装置 |
US4831985A (en) * | 1988-02-17 | 1989-05-23 | Mabee Brian D | Throttle control system |
US4883037A (en) * | 1988-02-17 | 1989-11-28 | Automotive Products Plc | Throttle control system |
FR2645110B1 (fr) | 1989-03-30 | 1994-08-26 | Brunet Jacques | Dispositif permettant d'assurer le redressement d'un bateau |
JPH0356719A (ja) * | 1989-07-24 | 1991-03-12 | Zexel Corp | クラッチ制御装置 |
DE3935438A1 (de) * | 1989-10-25 | 1991-05-02 | Fichtel & Sachs Ag | Anordnung zur betaetigung einer kraftfahrzeug-reibungskupplung |
US5121820A (en) * | 1990-12-24 | 1992-06-16 | Ford Motor Company | Feedforward control for automatic transmission torque converter bypass clutch slip |
DE4100372A1 (de) * | 1991-01-09 | 1992-07-16 | Fichtel & Sachs Ag | Anordnung zur regelung des schlupfs einer automatisierten reibungskupplung |
GB9125161D0 (en) * | 1991-11-27 | 1992-01-29 | Automotive Prod Plc | A clutch control system |
GB9402252D0 (en) | 1994-02-05 | 1994-03-30 | Automotive Products Plc | Clutch control system |
GB9402729D0 (en) | 1994-02-12 | 1994-04-06 | Automotive Products Plc | Clutch control system |
DE69616259T2 (de) | 1995-07-26 | 2002-07-11 | Luk Leamington Ltd., Leamington Spa | Gangschaltvorrichtung |
GB2311570B (en) | 1996-03-27 | 1998-05-13 | Ap Kongsberg Holdings Ltd | Gear position sensor |
GB9626527D0 (en) | 1996-12-20 | 1997-02-05 | Ap Kongsberg Holdings Ltd | Clutches |
US6319173B1 (en) * | 1997-04-16 | 2001-11-20 | Transmisiones Tsp, S.A. De C.V. | Method and apparatus for operating a clutch in an automated mechanical transmission |
WO1998046907A2 (en) * | 1997-04-16 | 1998-10-22 | Transmission Technologies Corporation | Method and apparatus for operating a clutch in an automated mechanical transmission |
DE19832939A1 (de) * | 1997-09-04 | 1999-03-11 | Luk Getriebe Systeme Gmbh | Verfahren zum Synchronisieren zumindest zweier Signale |
GB2339606B (en) * | 1998-05-22 | 2003-03-26 | Kongsberg Techmatic Uk Ltd | Dual pump drive |
GB2348932A (en) | 1999-04-14 | 2000-10-18 | Luk Getriebe Systeme Gmbh | Transmission system control which disengages a clutch at power-up |
GB9919179D0 (en) | 1999-08-16 | 1999-10-20 | Luk Getriebe Systeme Gmbh | Transmission systems |
GB2353835B (en) | 1999-09-04 | 2003-09-24 | Luk Lamellen & Kupplungsbau | Automated transmission systems |
GB9921428D0 (en) * | 1999-09-11 | 1999-11-10 | Luk Getriebe Systeme Gmbh | Automated transmission systems |
GB9927717D0 (en) * | 1999-11-20 | 2000-01-19 | Luk Getriebe Systeme Gmbh | Clutch control system |
FR2801355B1 (fr) | 1999-11-20 | 2006-09-15 | Luk Lamellen & Kupplungsbau | Systeme de commande d'embrayage |
DE10063501A1 (de) | 2000-01-24 | 2001-07-26 | Luk Lamellen & Kupplungsbau | Hydraulikeinrichtung |
GB0001364D0 (en) | 2000-01-24 | 2000-03-08 | Luk Getriebe Systeme Gmbh | Gear engagement mechanism |
GB0005185D0 (en) * | 2000-03-04 | 2000-04-26 | Luk Lamellen & Kupplungsbau | Gear engagement mechanisms |
GB0005186D0 (en) | 2000-03-04 | 2000-04-26 | Luk Lamellen & Kupplungsbau | Hydraulic actuation systems |
US6701241B2 (en) | 2000-09-15 | 2004-03-02 | Robert Bosch Gmbh | Method and device for operating a clutch |
GB0025000D0 (en) | 2000-10-12 | 2000-11-29 | Luk Lamellen & Kupplungsbau | Hydraulic actuation systems |
GB2368886A (en) | 2000-11-13 | 2002-05-15 | Luk Lamellen & Kupplungsbau | Automatic transmission with a hydraulic actuation system |
GB2369656A (en) | 2000-11-21 | 2002-06-05 | Luk Lamellen & Kupplungsbau | Automatic transmission hydraulic actuation system having an isolating valve which prevent leaks |
GB2370865A (en) | 2000-12-27 | 2002-07-10 | Luk Lamellen & Kupplungsbau | A compliant link |
GB2372080B (en) | 2001-02-12 | 2004-09-29 | Luk Lamellen & Kupplungsbau | Hydraulic actuation systems |
GB2373553B (en) | 2001-03-21 | 2004-09-29 | Luk Lamellen & Kupplungsbau | Automated transmission systems |
FR2826082B1 (fr) * | 2001-06-15 | 2003-10-24 | Valeo | Procede et dispositif de commande d'embrayage dans une boite de vitesses robotisee pour vehicule automobile |
GB2378489A (en) | 2001-07-31 | 2003-02-12 | Luk Lamellen & Kupplungsbau | Method of gear selection using current pulses in a hydraulic transmission system with actuators and valves |
GB2379721A (en) | 2001-09-12 | 2003-03-19 | Luk Lamellen & Kupplungsbau | Automated transmission system |
GB2381880A (en) | 2001-11-10 | 2003-05-14 | Luk Lamellen & Kupplungsbau | A method of initiating a vehicle system |
DE10210200A1 (de) * | 2002-03-07 | 2003-10-09 | Zf Sachs Ag | Kupplungssystem |
GB2392968A (en) | 2002-09-14 | 2004-03-17 | Luk Lamellen & Kupplungsbau | Clutch control system for automatically controlling a friction clutch in a motor vehicle |
GB2397396B (en) * | 2003-01-18 | 2006-05-10 | Luk Lamellen & Kupplungsbau | Automated transmission systems |
CN101302982B (zh) * | 2008-06-20 | 2010-06-02 | 重庆隆鑫机车有限公司 | 一种机动车油门开度传感器 |
US10612473B2 (en) * | 2018-01-25 | 2020-04-07 | GM Global Technology Operations LLC | Method and system for controlling a vehicle propulsion system based upon an adjusted clutch torque capacity |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1120132A (en) * | 1964-11-27 | 1968-07-17 | Smiths Industries Ltd | Improvements in automatic clutch engagement |
US4023660A (en) * | 1973-09-29 | 1977-05-17 | Ferranti, Limited | Follow-up servo systems for clutches |
AU525952B2 (en) * | 1978-01-24 | 1982-12-09 | Lahive, John A. | Mechanical automatic transmission |
DE2818427A1 (de) * | 1978-04-27 | 1979-11-08 | Bosch Gmbh Robert | Vorrichtung zur einstellung der betaetigungskraft einer kupplung |
AU548876B2 (en) * | 1980-02-18 | 1986-01-09 | Automotive Products Ltd. | Standing-start clutch control |
US4509625A (en) * | 1980-07-25 | 1985-04-09 | Sachs-Systemtechnik Gmbh | Automatic friction clutches and controls therefor |
-
1982
- 1982-01-26 AU AU79833/82A patent/AU552105B2/en not_active Ceased
- 1982-02-05 EP EP82300581A patent/EP0059035B1/de not_active Expired
- 1982-02-05 DE DE8282300581T patent/DE3275171D1/de not_active Expired
- 1982-02-12 MX MX191388A patent/MX150261A/es unknown
- 1982-02-19 US US06/350,284 patent/US4497397A/en not_active Expired - Fee Related
- 1982-02-19 BR BR8200902A patent/BR8200902A/pt unknown
- 1982-02-23 SU SU3394401A patent/SU1261557A3/ru active
- 1982-02-23 ES ES509823A patent/ES8303632A1/es not_active Expired
Also Published As
Publication number | Publication date |
---|---|
EP0059035A3 (en) | 1983-10-19 |
ES509823A0 (es) | 1983-02-01 |
AU7983382A (en) | 1982-09-02 |
SU1261557A3 (ru) | 1986-09-30 |
MX150261A (es) | 1984-04-05 |
AU552105B2 (en) | 1986-05-22 |
BR8200902A (pt) | 1982-12-28 |
EP0059035B1 (de) | 1987-01-21 |
ES8303632A1 (es) | 1983-02-01 |
EP0059035A2 (de) | 1982-09-01 |
US4497397A (en) | 1985-02-05 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |