GB1456047A - Voltage stress-resistant conductive articles - Google Patents
Voltage stress-resistant conductive articlesInfo
- Publication number
- GB1456047A GB1456047A GB5963773A GB5963773A GB1456047A GB 1456047 A GB1456047 A GB 1456047A GB 5963773 A GB5963773 A GB 5963773A GB 5963773 A GB5963773 A GB 5963773A GB 1456047 A GB1456047 A GB 1456047A
- Authority
- GB
- United Kingdom
- Prior art keywords
- electrodes
- carbon black
- copper
- composition
- dec
- 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
- 239000000203 mixture Substances 0.000 abstract 5
- -1 polyethylene Polymers 0.000 abstract 4
- 229920000642 polymer Polymers 0.000 abstract 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract 3
- 239000006229 carbon black Substances 0.000 abstract 3
- 229920001577 copolymer Polymers 0.000 abstract 3
- 229910052802 copper Inorganic materials 0.000 abstract 3
- 239000010949 copper Substances 0.000 abstract 3
- 239000011159 matrix material Substances 0.000 abstract 3
- 239000004698 Polyethylene Substances 0.000 abstract 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract 2
- 150000001412 amines Chemical class 0.000 abstract 2
- 229920000573 polyethylene Polymers 0.000 abstract 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 abstract 1
- 239000002033 PVDF binder Substances 0.000 abstract 1
- 239000004743 Polypropylene Substances 0.000 abstract 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 abstract 1
- 239000002253 acid Substances 0.000 abstract 1
- 229910052783 alkali metal Inorganic materials 0.000 abstract 1
- 150000001340 alkali metals Chemical class 0.000 abstract 1
- 229910052784 alkaline earth metal Inorganic materials 0.000 abstract 1
- 150000001342 alkaline earth metals Chemical class 0.000 abstract 1
- 125000002843 carboxylic acid group Chemical group 0.000 abstract 1
- 150000001993 dienes Chemical class 0.000 abstract 1
- XEKOWRVHYACXOJ-UHFFFAOYSA-N ethyl acetate Substances CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 abstract 1
- 239000000945 filler Substances 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 230000005865 ionizing radiation Effects 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 229920001748 polybutylene Polymers 0.000 abstract 1
- 229920002959 polymer blend Polymers 0.000 abstract 1
- 229920001155 polypropylene Polymers 0.000 abstract 1
- 229920002981 polyvinylidene fluoride Polymers 0.000 abstract 1
- 230000002035 prolonged effect Effects 0.000 abstract 1
- UGQZLDXDWSPAOM-UHFFFAOYSA-N pyrrolo[3,4-f]isoindole-1,3,5,7-tetrone Chemical compound C1=C2C(=O)NC(=O)C2=CC2=C1C(=O)NC2=O UGQZLDXDWSPAOM-UHFFFAOYSA-N 0.000 abstract 1
- 239000000377 silicon dioxide Substances 0.000 abstract 1
- 229910052709 silver Inorganic materials 0.000 abstract 1
- 239000004332 silver Substances 0.000 abstract 1
- 229920001897 terpolymer Polymers 0.000 abstract 1
- 150000003751 zinc Chemical class 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/10—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor
- H05B3/12—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material
- H05B3/14—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material the material being non-metallic
- H05B3/146—Conductive polymers, e.g. polyethylene, thermoplastics
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
- H01B3/44—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
- H01C7/02—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material having positive temperature coefficient
- H01C7/027—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material having positive temperature coefficient consisting of conducting or semi-conducting material dispersed in a non-conductive organic material
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/02—Details
- H05B3/06—Heater elements structurally combined with coupling elements or holders
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Ceramic Engineering (AREA)
- Electromagnetism (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Resistance Heating (AREA)
- Thermistors And Varistors (AREA)
- Conductive Materials (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US00319492A US3858144A (en) | 1972-12-29 | 1972-12-29 | Voltage stress-resistant conductive articles |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1456047A true GB1456047A (en) | 1976-11-17 |
Family
ID=23242462
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB5963773A Expired GB1456047A (en) | 1972-12-29 | 1973-12-21 | Voltage stress-resistant conductive articles |
GB2343876A Expired GB1456048A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1972-12-29 | 1973-12-21 |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2343876A Expired GB1456048A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1972-12-29 | 1973-12-21 |
Country Status (6)
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4413301A (en) | 1980-04-21 | 1983-11-01 | Raychem Corporation | Circuit protection devices comprising PTC element |
US4475138A (en) * | 1980-04-21 | 1984-10-02 | Raychem Corporation | Circuit protection devices comprising PTC element |
CN106409451A (zh) * | 2016-06-18 | 2017-02-15 | 芜湖长启炉业有限公司 | 基于聚苯硫醚的ptc电阻及其制备方法 |
GB2604908A (en) * | 2021-03-18 | 2022-09-21 | Nobel Gemlik Otomotiv Sanayi Veticaret Anonim Sirketi | A type of battery thermal management system |
Families Citing this family (87)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1521460A (en) * | 1974-08-30 | 1978-08-16 | Raychem Corp | Self-limiting electrically resistive article and process for its manufacture |
FI64482C (fi) * | 1974-09-27 | 1983-11-10 | Raychem Corp | Vaermeaoterhaemtbar anordning och anordning av densamma foer en kabelskarv |
US4177376A (en) * | 1974-09-27 | 1979-12-04 | Raychem Corporation | Layered self-regulating heating article |
US4058704A (en) * | 1974-12-27 | 1977-11-15 | Taeo Kim | Coilable and severable heating element |
US4560498A (en) * | 1975-08-04 | 1985-12-24 | Raychem Corporation | Positive temperature coefficient of resistance compositions |
NL7511173A (nl) * | 1975-09-23 | 1977-03-25 | Philips Nv | Zelfregelend verwarmingselement. |
CA1100561A (en) * | 1975-12-08 | 1981-05-05 | Stephen H. Diaz | Apertured deformable laminar heating elements |
NL7603997A (nl) * | 1976-04-15 | 1977-10-18 | Philips Nv | Elektrische verhittingsinrichting omvattende een weerstandslichaam uit p.t.c.-materiaal. |
US4866253A (en) * | 1976-12-13 | 1989-09-12 | Raychem Corporation | Electrical devices comprising conductive polymer compositions |
DE2760408C2 (de) * | 1976-12-13 | 1996-04-04 | Raychem Corp | Heizstreifen und Verfahren zu seiner Herstellung |
DE2760471C2 (de) * | 1976-12-13 | 1996-04-04 | Raychem Corp | Verfahren zur Herstellung einer aus einer Elektrode und einer elektrisch leitfähigen Polymermasse bestehenden elektrischen Vorrichtung |
US4876440A (en) * | 1976-12-13 | 1989-10-24 | Raychem Corporation | Electrical devices comprising conductive polymer compositions |
US4764664A (en) * | 1976-12-13 | 1988-08-16 | Raychem Corporation | Electrical devices comprising conductive polymer compositions |
DE2919436A1 (de) * | 1978-05-18 | 1979-11-22 | Hotfoil Ltd | Gegenstand aus einem polymeren elektrischen widerstandsmaterial |
DE2923495A1 (de) * | 1978-06-15 | 1980-01-03 | Hotfoil Ltd | Heizband |
US4238812A (en) * | 1978-12-01 | 1980-12-09 | Raychem Corporation | Circuit protection devices comprising PTC elements |
US4237441A (en) * | 1978-12-01 | 1980-12-02 | Raychem Corporation | Low resistivity PTC compositions |
US4242573A (en) * | 1979-01-24 | 1980-12-30 | Raychem Corporation | Water immersible heater |
JPS55151782A (en) * | 1979-05-10 | 1980-11-26 | Sunbeam Corp | Flexible heater and method of manufacturing same |
US4425497A (en) | 1979-08-17 | 1984-01-10 | Raychem Corporation | PTC Heater assembly |
US4547659A (en) * | 1979-08-17 | 1985-10-15 | Raychem Corporation | PTC Heater assembly |
US4673801A (en) * | 1979-08-17 | 1987-06-16 | Raychem Corporation | PTC heater assembly |
US4304044A (en) * | 1979-11-19 | 1981-12-08 | The Scott & Fetzer Company | Method for forming self-regulating heat trace cable |
US4250400A (en) * | 1979-11-19 | 1981-02-10 | The Scott & Fetzer Company | Flexible temperature self regulating heating cable |
US4352083A (en) * | 1980-04-21 | 1982-09-28 | Raychem Corporation | Circuit protection devices |
US4309597A (en) * | 1980-05-19 | 1982-01-05 | Sunbeam Corporation | Blanket wire utilizing positive temperature coefficient resistance heater |
US4271350A (en) * | 1980-05-19 | 1981-06-02 | Sunbeam Corporation | Blanket wire utilizing positive temperature coefficient resistance heater |
US4309596A (en) * | 1980-06-24 | 1982-01-05 | Sunbeam Corporation | Flexible self-limiting heating cable |
US5140297A (en) * | 1981-04-02 | 1992-08-18 | Raychem Corporation | PTC conductive polymer compositions |
US5227946A (en) * | 1981-04-02 | 1993-07-13 | Raychem Corporation | Electrical device comprising a PTC conductive polymer |
US4951382A (en) * | 1981-04-02 | 1990-08-28 | Raychem Corporation | Method of making a PTC conductive polymer electrical device |
US4951384A (en) * | 1981-04-02 | 1990-08-28 | Raychem Corporation | Method of making a PTC conductive polymer electrical device |
US5195013A (en) * | 1981-04-02 | 1993-03-16 | Raychem Corporation | PTC conductive polymer compositions |
US4845838A (en) * | 1981-04-02 | 1989-07-11 | Raychem Corporation | Method of making a PTC conductive polymer electrical device |
US4955267A (en) * | 1981-04-02 | 1990-09-11 | Raychem Corporation | Method of making a PTC conductive polymer electrical device |
US4560524A (en) * | 1983-04-15 | 1985-12-24 | Smuckler Jack H | Method of manufacturing a positive temperature coefficient resistive heating element |
US4560443A (en) * | 1983-05-31 | 1985-12-24 | Chevron Research Company | Gas diffusion anode |
EP0250776B1 (en) | 1983-06-30 | 1992-06-10 | RAYCHEM CORPORATION (a Delaware corporation) | Method for detecting and obtaining information about changes in variables |
US4471215A (en) * | 1983-08-24 | 1984-09-11 | Eaton Corporation | Self-regulating heating cable having radiation grafted jacket |
US4514620A (en) * | 1983-09-22 | 1985-04-30 | Raychem Corporation | Conductive polymers exhibiting PTC characteristics |
US4761541A (en) * | 1984-01-23 | 1988-08-02 | Raychem Corporation | Devices comprising conductive polymer compositions |
US4668857A (en) * | 1985-08-16 | 1987-05-26 | Belton Corporation | Temperature self-regulating resistive heating element |
DE3775097D1 (de) | 1986-02-20 | 1992-01-23 | Raychem Corp | Einen ionentauschenden stoff verwendende verfahren und gegenstand. |
US5057673A (en) * | 1988-05-19 | 1991-10-15 | Fluorocarbon Company | Self-current-limiting devices and method of making same |
US5250226A (en) * | 1988-06-03 | 1993-10-05 | Raychem Corporation | Electrical devices comprising conductive polymers |
US5111032A (en) * | 1989-03-13 | 1992-05-05 | Raychem Corporation | Method of making an electrical device comprising a conductive polymer |
GB8920283D0 (en) * | 1989-09-07 | 1989-10-18 | Hill Robert G Q | Self temperature limiting electro-conducting composites |
US5925276A (en) * | 1989-09-08 | 1999-07-20 | Raychem Corporation | Conductive polymer device with fuse capable of arc suppression |
US5004432A (en) * | 1989-10-02 | 1991-04-02 | Raychem Corporation | Electrical connector |
US5002501A (en) * | 1989-10-02 | 1991-03-26 | Raychem Corporation | Electrical plug |
JPH04272680A (ja) * | 1990-09-20 | 1992-09-29 | Thermon Mfg Co | スイッチ制御形ゾーン式加熱ケーブル及びその組み立て方法 |
US6111234A (en) * | 1991-05-07 | 2000-08-29 | Batliwalla; Neville S. | Electrical device |
US5517003A (en) * | 1993-06-29 | 1996-05-14 | Metagal Industria E Comercio Ltd. | Self-regulating heater including a polymeric semiconductor substrate containing porous conductive lampblack |
US5756972A (en) * | 1994-10-25 | 1998-05-26 | Raychem Corporation | Hinged connector for heating cables of various sizes |
US5622642A (en) * | 1995-02-06 | 1997-04-22 | Raychem Corporation | Sealing apparatus for elongate cables having movable insert with gripping members |
DE69606310T2 (de) * | 1995-08-15 | 2001-04-05 | Bourns, Multifuse (Hong Kong) Ltd. | Oberflächenmontierte leitfähige bauelemente und verfahren zur herstellung derselben |
TW309619B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * | 1995-08-15 | 1997-07-01 | Mourns Multifuse Hong Kong Ltd | |
US5792987A (en) * | 1995-08-28 | 1998-08-11 | Raychem Corporation | Sealing device |
US6059997A (en) * | 1995-09-29 | 2000-05-09 | Littlelfuse, Inc. | Polymeric PTC compositions |
DE19548741A1 (de) | 1995-12-23 | 1997-06-26 | Abb Research Ltd | Verfahren zur Herstellung eines Materials für PTC-Widerstände |
US5718600A (en) * | 1996-01-17 | 1998-02-17 | Raychem Corporation | Electrical plug |
US5814264A (en) * | 1996-04-12 | 1998-09-29 | Littelfuse, Inc. | Continuous manufacturing methods for positive temperature coefficient materials |
US6023403A (en) * | 1996-05-03 | 2000-02-08 | Littlefuse, Inc. | Surface mountable electrical device comprising a PTC and fusible element |
US6005232A (en) * | 1996-06-28 | 1999-12-21 | Raychem Corporation | Heating cable |
US5767448A (en) * | 1996-09-30 | 1998-06-16 | Raychem Corporation | Sealing device |
US5841111A (en) * | 1996-12-19 | 1998-11-24 | Eaton Corporation | Low resistance electrical interface for current limiting polymers by plasma processing |
US6020808A (en) | 1997-09-03 | 2000-02-01 | Bourns Multifuse (Hong Kong) Ltd. | Multilayer conductive polymer positive temperature coefficent device |
US6282072B1 (en) | 1998-02-24 | 2001-08-28 | Littelfuse, Inc. | Electrical devices having a polymer PTC array |
WO2000019455A1 (en) | 1998-09-25 | 2000-04-06 | Bourns, Inc. | Two-step process for preparing positive temperature coefficient polymer materials |
US6582647B1 (en) | 1998-10-01 | 2003-06-24 | Littelfuse, Inc. | Method for heat treating PTC devices |
DE69928274T2 (de) | 1998-10-15 | 2006-06-01 | Tyco Electronics Corp., Menlo Park | Verbinder für ein elektrisches kabel |
US6358438B1 (en) | 1999-07-30 | 2002-03-19 | Tyco Electronics Corporation | Electrically conductive polymer composition |
DE19963893A1 (de) * | 1999-12-30 | 2001-07-12 | Bison Stematec Maschb Und Huba | Antriebsvorrichtung |
SE518872C2 (sv) * | 2000-01-28 | 2002-12-03 | Polyohm Ab | Anordning för golvuppvärmning |
US7214757B2 (en) | 2000-03-09 | 2007-05-08 | Eastman Kodak Company | Polyurethane elastomers and shaped articles prepared therefrom |
US6593843B1 (en) | 2000-06-28 | 2003-07-15 | Tyco Electronics Corporation | Electrical devices containing conductive polymers |
US6531950B1 (en) | 2000-06-28 | 2003-03-11 | Tyco Electronics Corporation | Electrical devices containing conductive polymers |
US6628498B2 (en) | 2000-08-28 | 2003-09-30 | Steven J. Whitney | Integrated electrostatic discharge and overcurrent device |
WO2003088356A1 (en) | 2002-04-08 | 2003-10-23 | Littelfuse, Inc. | Voltage variable material for direct application and devices employing same |
US7132922B2 (en) | 2002-04-08 | 2006-11-07 | Littelfuse, Inc. | Direct application voltage variable material, components thereof and devices employing same |
US7183891B2 (en) | 2002-04-08 | 2007-02-27 | Littelfuse, Inc. | Direct application voltage variable material, devices employing same and methods of manufacturing such devices |
US7371459B2 (en) * | 2004-09-03 | 2008-05-13 | Tyco Electronics Corporation | Electrical devices having an oxygen barrier coating |
EP1634896A1 (en) * | 2004-09-10 | 2006-03-15 | Borealis Technology Oy | Polymer composition |
EP2116778B1 (de) * | 2008-05-09 | 2016-03-16 | Kronoplus Technical AG | Beheizbares Belagsystem |
US9603196B2 (en) * | 2012-12-14 | 2017-03-21 | Tech Design Llc | Self-regulating semi-conductive flexible heating element |
CA3011250A1 (en) | 2016-01-12 | 2017-07-20 | 3M Innovative Properties Company | Heating tape and system |
WO2017190146A1 (en) | 2016-04-29 | 2017-11-02 | Pentair Thermal Management Llc | Voltage-leveling monolithic self-regulating heater cable |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1305140A (fr) * | 1961-11-09 | 1962-09-28 | Montedison Spa | Mélanges à base de polyoléfines cristallines et éléments électriques de conductance variable formés de tels mélanges |
US3243753A (en) * | 1962-11-13 | 1966-03-29 | Kohler Fred | Resistance element |
GB1144316A (en) * | 1965-08-13 | 1969-03-05 | Dunlop Co Ltd | Improved emulsions of alkali-soluble copolymers |
JPS534238B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * | 1967-08-23 | 1978-02-15 | ||
US3673121A (en) * | 1970-01-27 | 1972-06-27 | Texas Instruments Inc | Process for making conductive polymers and resulting compositions |
-
1972
- 1972-12-29 US US00319492A patent/US3858144A/en not_active Expired - Lifetime
-
1973
- 1973-12-21 GB GB5963773A patent/GB1456047A/en not_active Expired
- 1973-12-21 GB GB2343876A patent/GB1456048A/en not_active Expired
- 1973-12-28 CA CA189,180A patent/CA1017395A/en not_active Expired
- 1973-12-28 FR FR7346976A patent/FR2212617B1/fr not_active Expired
- 1973-12-28 DE DE2364947A patent/DE2364947C2/de not_active Expired
- 1973-12-28 BE BE139428A patent/BE809287A/xx not_active IP Right Cessation
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4413301A (en) | 1980-04-21 | 1983-11-01 | Raychem Corporation | Circuit protection devices comprising PTC element |
US4475138A (en) * | 1980-04-21 | 1984-10-02 | Raychem Corporation | Circuit protection devices comprising PTC element |
CN106409451A (zh) * | 2016-06-18 | 2017-02-15 | 芜湖长启炉业有限公司 | 基于聚苯硫醚的ptc电阻及其制备方法 |
CN106409451B (zh) * | 2016-06-18 | 2018-03-27 | 芜湖长启炉业有限公司 | 基于聚苯硫醚的ptc电阻及其制备方法 |
GB2604908A (en) * | 2021-03-18 | 2022-09-21 | Nobel Gemlik Otomotiv Sanayi Veticaret Anonim Sirketi | A type of battery thermal management system |
Also Published As
Publication number | Publication date |
---|---|
CA1017395A (en) | 1977-09-13 |
DE2364947A1 (de) | 1974-07-25 |
GB1456048A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1976-11-17 |
BE809287A (fr) | 1974-06-28 |
DE2364947C2 (de) | 1985-04-18 |
FR2212617B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1979-06-29 |
FR2212617A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1974-07-26 |
US3858144A (en) | 1974-12-31 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PCNP | Patent ceased through non-payment of renewal fee |