SE8008205L - PRESSURE ELECTRONIC DEVICE - Google Patents

PRESSURE ELECTRONIC DEVICE

Info

Publication number
SE8008205L
SE8008205L SE8008205A SE8008205A SE8008205L SE 8008205 L SE8008205 L SE 8008205L SE 8008205 A SE8008205 A SE 8008205A SE 8008205 A SE8008205 A SE 8008205A SE 8008205 L SE8008205 L SE 8008205L
Authority
SE
Sweden
Prior art keywords
conductors
electronic device
pressure electronic
resistive conductor
disposed
Prior art date
Application number
SE8008205A
Other languages
Unknown language ( )
Swedish (sv)
Other versions
SE452925B (en
Inventor
F N Eventoff
S A Tcherepnin
Original Assignee
Eventoff Franklin Neal
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
Priority claimed from US06/097,610 external-priority patent/US4268815A/en
Priority claimed from US06/110,416 external-priority patent/US4276538A/en
Priority claimed from US06/135,386 external-priority patent/US4301337A/en
Priority claimed from US06/140,921 external-priority patent/US4315238A/en
Priority claimed from US06/140,937 external-priority patent/US4314228A/en
Application filed by Eventoff Franklin Neal filed Critical Eventoff Franklin Neal
Publication of SE8008205L publication Critical patent/SE8008205L/en
Publication of SE452925B publication Critical patent/SE452925B/en

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/70Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
    • H01H13/78Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard characterised by the contacts or the contact sites
    • H01H13/807Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard characterised by the contacts or the contact sites characterised by the spatial arrangement of the contact sites, e.g. superimposed sites
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60CVEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C23/00Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
    • B60C23/02Signalling devices actuated by tyre pressure
    • B60C23/04Signalling devices actuated by tyre pressure mounted on the wheel or tyre
    • B60C23/0408Signalling devices actuated by tyre pressure mounted on the wheel or tyre transmitting the signals by non-mechanical means from the wheel or tyre to a vehicle body mounted receiver
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00Contacts
    • H01H1/02Contacts characterised by the material thereof
    • H01H1/021Composite material
    • H01H1/029Composite material comprising conducting material dispersed in an elastic support or binding material
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/70Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
    • H01H13/702Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/70Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
    • H01H13/78Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard characterised by the contacts or the contact sites
    • H01H13/785Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard characterised by the contacts or the contact sites characterised by the material of the contacts, e.g. conductive polymers
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/70Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
    • H01H13/78Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard characterised by the contacts or the contact sites
    • H01H13/80Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard characterised by the contacts or the contact sites characterised by the manner of cooperation of the contacts, e.g. with both contacts movable or with bounceless contacts
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/70Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
    • H01H13/702Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches
    • H01H13/703Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches characterised by spacers between contact carrying layers
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2201/00Contacts
    • H01H2201/002Contacts bounceless
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2201/00Contacts
    • H01H2201/022Material
    • H01H2201/032Conductive polymer; Rubber
    • H01H2201/036Variable resistance
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2203/00Form of contacts
    • H01H2203/012Microprotrusions
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2203/00Form of contacts
    • H01H2203/02Interspersed fingers
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2211/00Spacers
    • H01H2211/026Spacers without separate element
    • H01H2211/032Pressure sensitive layer on contacts
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2213/00Venting
    • H01H2213/002Venting with external pressure
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2213/00Venting
    • H01H2213/016Venting in adhesive layer
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2215/00Tactile feedback
    • H01H2215/004Collapsible dome or bubble
    • H01H2215/008Part of substrate or membrane
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2221/00Actuators
    • H01H2221/008Actuators other then push button
    • H01H2221/02Actuators other then push button pneumatic
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2225/00Switch site location
    • H01H2225/002Switch site location superimposed
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2225/00Switch site location
    • H01H2225/006Switch site location more then one pole
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2227/00Dimensions; Characteristics
    • H01H2227/002Layer thickness
    • H01H2227/012Conductive rubber
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2227/00Dimensions; Characteristics
    • H01H2227/002Layer thickness
    • H01H2227/012Conductive rubber
    • H01H2227/014Conductive particles
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2229/00Manufacturing
    • H01H2229/002Screen printing
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2229/00Manufacturing
    • H01H2229/012Vacuum deposition
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2229/00Manufacturing
    • H01H2229/014Electro deposition
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2229/00Manufacturing
    • H01H2229/024Packing between substrate and membrane
    • H01H2229/028Adhesive
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2229/00Manufacturing
    • H01H2229/038Folding of flexible printed circuit
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2231/00Applications
    • H01H2231/018Musical instrument
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2239/00Miscellaneous
    • H01H2239/016Miscellaneous combined with start switch, discrete keyboard
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2239/00Miscellaneous
    • H01H2239/078Variable resistance by variable contact area or point
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S84/00Music
    • Y10S84/07Electric key switch structure

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Dispersion Chemistry (AREA)
  • Composite Materials (AREA)
  • Materials Engineering (AREA)
  • Push-Button Switches (AREA)
  • Manufacture Of Switches (AREA)
  • Measuring Fluid Pressure (AREA)

Abstract

A pressure responsive electric switch has at least one pair of first (104) and second (112) conductors in spaced- apart relationship with at least one pressure sensitive resistive conductor (106, 114) is disposed in a position to interconnect the conductors when a force is applied. The invention may be incorporated in multiple touch switches having the conductors (220, 240) Figure 7 disposed side by side or stacked one above the other as in Figure 10 (not shown). The resistive conductor may be made from molybdenum disulphide particles with a resin binder and may include powdered carbon. <IMAGE>
SE8008205A 1979-11-26 1980-11-24 STAND-FREE SWITCHING DEVICE SE452925B (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US06/097,610 US4268815A (en) 1979-11-26 1979-11-26 Multi-function touch switch apparatus
US06/110,416 US4276538A (en) 1980-01-07 1980-01-07 Touch switch keyboard apparatus
US06/135,386 US4301337A (en) 1980-03-31 1980-03-31 Dual lateral switch device
US06/140,921 US4315238A (en) 1979-09-24 1980-04-16 Bounceless switch apparatus
US06/140,937 US4314228A (en) 1980-04-16 1980-04-16 Pressure transducer

Publications (2)

Publication Number Publication Date
SE8008205L true SE8008205L (en) 1981-05-27
SE452925B SE452925B (en) 1987-12-21

Family

ID=27536842

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8008205A SE452925B (en) 1979-11-26 1980-11-24 STAND-FREE SWITCHING DEVICE

Country Status (8)

Country Link
AU (1) AU544234B2 (en)
CA (1) CA1153801A (en)
DE (1) DE3044384C2 (en)
FR (1) FR2470435B1 (en)
GB (4) GB2064873B (en)
IT (1) IT1143185B (en)
NL (1) NL8006409A (en)
SE (1) SE452925B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8674932B2 (en) 1996-07-05 2014-03-18 Anascape, Ltd. Image controller
US9081426B2 (en) 1992-03-05 2015-07-14 Anascape, Ltd. Image controller

Families Citing this family (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4566363A (en) * 1983-03-02 1986-01-28 Casio Computer Co., Ltd. Electronic musical instrument
US4680432A (en) * 1984-08-07 1987-07-14 Casio Computer Co., Ltd. Compact electronic device
US4554033A (en) * 1984-10-04 1985-11-19 Amp Incorporated Method of forming an electrical interconnection means
DE3446327A1 (en) * 1984-12-19 1986-06-26 Telefunken Electronic Gmbh Resistance element with foam plastic
US4617608A (en) * 1984-12-28 1986-10-14 At&T Bell Laboratories Variable gap device and method of manufacture
JPS61239299A (en) * 1985-04-16 1986-10-24 ヤマハ株式会社 Electronic percussion instrument
CN1010143B (en) * 1985-09-26 1990-10-24 约翰弗兰克制造公司 Particulate spacers for touch sensitive overlay panel applications
US4965421A (en) * 1985-09-26 1990-10-23 John Fluke Mfg. Co., Inc. Particulate spacers for touch sensitive overlay panel applications
US4794366A (en) * 1985-11-15 1988-12-27 Toshiba Silicone Co., Ltd. Key-touch sensor and method of manufacture
DE3624166A1 (en) * 1986-07-17 1988-01-21 Schoeller & Co Elektrotech FILM SWITCHING
GB2225660A (en) * 1988-12-05 1990-06-06 Autoliv Dev A trigger circuit arrangement for a vehicle safety device, eg a crash bag
EP0489344A1 (en) * 1990-12-03 1992-06-10 I.E.E. International Electronics &amp; Engineering S.à.r.l. Method for identifying an activated key of a keyboard
FR2692419B1 (en) * 1992-01-24 1997-05-16 Fusilier Jean Marie APPLICATION OF A FLAT KEYBOARD WITH PROGRESSIVE BUTTONS TO THE WIRELESS REMOTE CONTROL OF A FUNCTIONAL UNIT.
DE4216349C2 (en) * 1992-05-17 1994-06-09 Reinhold Fahrion Electronic musical instrument with a melody and an accompaniment keyboard
DE4237072C1 (en) * 1992-11-03 1993-12-02 Daimler Benz Ag Resistive film pressure or force sensor for indicating occupation of vehicle seat - has conductive paths for providing series of meandering interdigitated local area transducer electrodes on polymer and semiconductor substrate.
DE4332927C2 (en) * 1993-09-28 1995-06-29 Schurter Gmbh Piezo switching element
WO1995022828A1 (en) * 1994-02-17 1995-08-24 Interlink Electronics, Inc. Layered pressure sensitive transducer and method for making same
DE19530092A1 (en) * 1995-08-16 1997-02-20 Daimler Benz Ag Checkable film pressure sensor
JPH10155593A (en) * 1996-11-28 1998-06-16 Aisin Seiki Co Ltd Pressure-sensitive switch
JP3962959B2 (en) * 1996-12-20 2007-08-22 アイシン精機株式会社 Pressure sensitive switch
DE19748485A1 (en) * 1997-11-03 1999-05-06 Todor Dimitriev Musical instrument key
DE10247404B4 (en) * 2002-10-04 2007-10-18 T & T Medilogic Medizintechnik Gmbh Sensor for detecting forces by size and direction and pressure measuring plate formed therefrom
DE112004002994A5 (en) 2004-12-08 2007-10-31 Abb Patent Gmbh Method of manufacturing a transmitter
US7260999B2 (en) 2004-12-23 2007-08-28 3M Innovative Properties Company Force sensing membrane
US7468199B2 (en) 2004-12-23 2008-12-23 3M Innovative Properties Company Adhesive membrane for force switches and sensors
US7509881B2 (en) 2005-07-29 2009-03-31 3M Innovative Properties Company Interdigital force switches and sensors
EP2006869A1 (en) * 2007-06-22 2008-12-24 IEE INTERNATIONAL ELECTRONICS &amp; ENGINEERING S.A. Film-type switching element

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GB371504A (en) * 1930-02-06 1932-04-28 Andre Becq Improvements in or relating to pressure-regulated apparatus, particularly pressure gauges
GB608669A (en) * 1945-12-19 1948-09-20 Speed Marketing Company Sussex Improvements in fluid pressure operated switches
US3122617A (en) * 1960-10-07 1964-02-25 Kollsman Instr Corp Pressure control switch
GB969167A (en) * 1962-03-26 1964-09-09 Karl Torsten Kalle A device for transmitting impulses
GB1209647A (en) * 1966-11-28 1970-10-21 Matsushita Electric Ind Co Ltd Electro-mechanical transducer element
US3806471A (en) * 1968-04-29 1974-04-23 R Mitchell Pressure responsive resistive material
US3551616A (en) * 1969-01-15 1970-12-29 Ibm Multiple switch encoding device
US3503031A (en) * 1969-02-11 1970-03-24 Control Data Corp Printed circuit keyboard
US3626350A (en) * 1969-02-20 1971-12-07 Nippon Musical Instruments Mfg Variable resistor device for electronic musical instruments capable of playing monophonic, chord and portamento performances with resilient contact strips
BE756130A (en) * 1969-09-15 1971-03-15 Essex International Inc PRESSURE SENSITIVE SWITCH-CUTTER COMBINATION
US3617660A (en) * 1970-01-23 1971-11-02 Ibm Keyboard actuating mechanism for diaphragm electric switch contact array
US3617666A (en) * 1970-04-30 1971-11-02 Data Appliance Corp Pressure-operated layered electrical switch and switch array
US3758733A (en) * 1971-10-04 1973-09-11 Essex International Inc Ric material and conductive particles therein pressure sensitive stepping switches with multi layer spring contact assembly with interposed layers of lubricated non-conductive elastome
US3968336A (en) * 1974-09-23 1976-07-06 Xerox Corporation Keyboard switch assembly having movable contact, and supporting helicline type legs disposed co-planar to common conductive sheet
US4085302A (en) * 1976-11-22 1978-04-18 Control Data Corporation Membrane-type touch panel
FR2443130A1 (en) * 1978-11-29 1980-06-27 Serras Paulet Edouard CONTROL KEYBOARD FOR ELECTRIC OR ELECTRONIC DEVICES
FR2443129A1 (en) * 1978-11-29 1980-06-27 Serras Paulet Edouard ELECTRICAL OR ELECTRONIC SWITCHING DEVICE FORMING PUSH BUTTON OR KEYBOARD WITH SOCKET KEYS
DE2902769C2 (en) * 1979-01-25 1982-12-09 Rudolf Schadow Gmbh, 1000 Berlin Push button switch
GB2071420B (en) * 1980-03-12 1984-08-08 Int Computers Ltd Retractive mechanical switches

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9081426B2 (en) 1992-03-05 2015-07-14 Anascape, Ltd. Image controller
US8674932B2 (en) 1996-07-05 2014-03-18 Anascape, Ltd. Image controller

Also Published As

Publication number Publication date
IT1143185B (en) 1986-10-22
GB2064873B (en) 1984-09-05
CA1153801A (en) 1983-09-13
GB8318533D0 (en) 1983-08-10
NL8006409A (en) 1981-06-16
GB2134321B (en) 1985-05-01
GB8318534D0 (en) 1983-08-10
SE452925B (en) 1987-12-21
DE3044384A1 (en) 1981-08-27
FR2470435A1 (en) 1981-05-29
DE3044384C2 (en) 1994-05-11
GB8322859D0 (en) 1983-09-28
IT8050239A0 (en) 1980-11-25
AU544234B2 (en) 1985-05-23
GB2134322A (en) 1984-08-08
GB2134320A (en) 1984-08-08
AU6467980A (en) 1981-06-04
GB2064873A (en) 1981-06-17
GB2134321A (en) 1984-08-08
GB2134322B (en) 1985-05-01
FR2470435B1 (en) 1985-06-14
GB2134320B (en) 1985-05-01

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