| Patents for H01T 4 - Overvoltage arresters using spark gaps (2,976) |
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| 03/01/1990 | DE3828177A1 Lighting and monitoring device for a socket outlet with earthing contact |
| 02/27/1990 | US4905275 Laminar type telephone protector block and interconnectable modular elements therefor |
| 02/13/1990 | US4901190 Distribution arrangement for telecommunication apparatus |
| 02/13/1990 | US4901189 Terminal block and methods of making |
| 02/13/1990 | US4901188 For a communications circuit |
| 02/06/1990 | US4899248 Modular electrical assemblies with plastic film barriers |
| 01/31/1990 | CN2052159U Tv set protector |
| 01/03/1990 | EP0253223B1 Surge arrester arrangement for a metallic, shielded gas-insulated electric device |
| 01/02/1990 | US4891731 Sputtering carbon particles |
| 01/02/1990 | US4891730 Monolithic microwave integrated circuit terminal protection device |
| 12/13/1989 | CN2049415U Thunder eliminating device by induction ionization |
| 12/06/1989 | CN2049026U Socket type arrester for anti-jam of tv |
| 12/05/1989 | CA1263691A1 Current limiting horn device for transmission line |
| 11/30/1989 | DE3901514A1 Terminal strip having spark gaps |
| 11/29/1989 | EP0343658A2 Lightning arrester monitor |
| 11/29/1989 | CN1005947B Arrester connection device for overhead transmission line |
| 11/21/1989 | US4882748 Homologated protector modules for telephone connector blocks |
| 11/21/1989 | CA1263162A1 Electrical device casing, namely a lightning arrester, incorporating a moulded insulating enveloppe |
| 11/15/1989 | CN2047831U Lightning protector with single-phase source |
| 11/15/1989 | CN1037239A Protected plug for connector block or breaker block |
| 11/14/1989 | US4881255 Protector module for quick clip terminal telephone connector blocks |
| 11/02/1989 | EP0339492A2 Device for facultatively connecting electrical lines |
| 11/02/1989 | DE3813808A1 Arrangement for the selective connection of electrical cables |
| 10/31/1989 | US4878146 Line protector |
| 10/31/1989 | CA1262560A1 Apparatus for providing protection for station protectors for telephone systems |
| 10/25/1989 | EP0338187A2 Safety plug for switching or disconnecting rails |
| 10/24/1989 | US4876621 Line protector for a communications circuit |
| 10/24/1989 | US4875868 Electrically protected connector for telephone distribution frames |
| 10/04/1989 | EP0335479A2 Modular electrical assemblies with plastic film barriers |
| 09/27/1989 | EP0334151A1 Distribution device for telecommunication installations |
| 09/14/1989 | DE3806505A1 Picture-tube (cathode ray tube) socket having a built-in surge arrester |
| 09/14/1989 | DE3806478A1 Plug socket for installation in buildings |
| 09/13/1989 | CN2044384U Lightening arrester socket for tv antenna |
| 09/12/1989 | US4866562 Self-contained air gap assembly |
| 08/30/1989 | CN2043790U Separator for lightning arrester |
| 08/29/1989 | US4862311 Overvoltage protector for use with data cables |
| 08/09/1989 | CN2042635U Glass package spark discharge gap tube |
| 07/12/1989 | EP0135572B1 Device for protecting overhead electroconducting lines against lightning |
| 07/11/1989 | CA1257323A1 Station protector for telecommunications systems |
| 06/01/1989 | DE3738260A1 Apparatus for protecting against the influence of overvoltages and/or interference voltages |
| 05/17/1989 | CN2037879U Discharge valve and its combination with leak coil |
| 05/16/1989 | US4831485 Gas discharge overvoltage arrester |
| 05/11/1989 | DE3736053A1 Vorrichtung zur funktionsueberwachung von ueberspannungsableitern Apparatus for FUNCTION MONITORING of surge arresters |
| 05/09/1989 | US4828506 Printed circuit connector with spark gap for discharging excess voltage |
| 05/03/1989 | EP0314543A1 Device for electrostatic protection for printed electric circuits |
| 05/03/1989 | DE3805890A1 Watchdog device for overvoltage arresters |
| 05/03/1989 | DE3805889A1 Watchdog device for overvoltage arresters |
| 05/02/1989 | US4827370 Enclosure for electric device, in particular for surge arrester, including a molded, electrically insulating envelope |
| 04/18/1989 | US4822301 CRT socket |
| 03/30/1989 | DE3815666A1 Plug-in overvoltage suppressor |
| 03/21/1989 | US4813882 Mounting base apparatus |
| 03/21/1989 | CA1251501A1 Protector with circuit disabler |
| 03/14/1989 | US4812944 Electrical equipment |
| 01/26/1989 | WO1989000780A1 Overvoltage protector for an elongate terminal block with a plurality of connectors |
| 01/26/1989 | DE3723571A1 High-voltage spark gap |
| 01/24/1989 | US4800587 Telephone line protector with line disconnect and an entrance terminal assembly incorporating a plurality of protectors |
| 01/17/1989 | CA1249016A1 Overload protector for communications systems |
| 01/12/1989 | DE3721837A1 Overvoltage protection apparatus |
| 01/10/1989 | US4797778 Gas discharge path |
| 01/03/1989 | US4796150 Telecommunication protector unit with pivotal surge protector |
| 12/27/1988 | US4794485 Voltage surge protector |
| 12/08/1988 | DE3716997A1 Overvoltage protection apparatus |
| 11/01/1988 | US4782423 Lightning arrester |
| 10/18/1988 | US4779162 For use in an electrical apparatus |
| 10/04/1988 | CA1242759A1 Zinc oxide lightning protector |
| 09/27/1988 | US4774622 Connecting apparatus for lightning arresters for overhead transmission lines |
| 09/15/1988 | DE3707197A1 Method for testing the leakproofness of electrical devices, in particular surge voltage protectors, accommodated in a housing sealed in a gastight fashion |
| 09/06/1988 | US4769736 Gas discharge surge arrester |
| 08/31/1988 | CN87216682U Anti-interference arrester for tv receiver |
| 08/24/1988 | CN87216913U Mini-lightning arrester for out-door tv antenna |
| 08/17/1988 | EP0278612A1 Protection device |
| 07/27/1988 | EP0275772A1 Housing for an electric device, particularly for a surge arrester, comprising an insulating moulded envelope |
| 07/19/1988 | US4758921 Grounded surge protection unit for telephone subscriber circuits |
| 07/13/1988 | CN87206423U Lightning arrester with electrical testing meter |
| 07/06/1988 | CN87206074U Discharging gap of arrester |
| 06/28/1988 | US4754363 Metal-encapsulated gas-insulated high-voltage installation with an overvoltage arrester |
| 06/28/1988 | CA1238681A1 Heat protection device for overvoltage arrester magazines adapted to be plugged into terminal blocks loaded with solderless, non-screwed and stripping- free terminals |
| 06/21/1988 | US4752760 Electrical device end cap connection assembly using rigid sealing material |
| 06/01/1988 | EP0268940A2 CRT socket |
| 06/01/1988 | DE3639533A1 Plug-in surge diverter for electrical installations |
| 06/01/1988 | CN87107934A Cathode rays tube socket |
| 05/25/1988 | EP0268024A1 Voltage surge arrester device for telecommunication conductors |
| 05/24/1988 | US4746381 Method of making an end cap connection for a fluid-resistance electrical device |
| 04/27/1988 | CN87106916A Arrester connection device for overhead transmission line |
| 04/19/1988 | US4739439 Overvoltage arrester |
| 04/12/1988 | US4737880 Station protector for communications lines |
| 04/05/1988 | US4736272 Current-limiting arcing horn |
| 04/05/1988 | US4736269 Voltage surge limiter with grounding assembly |
| 03/22/1988 | US4733325 Electrical protective devices |
| 03/22/1988 | US4733324 Surge arrestor |
| 03/16/1988 | EP0259731A2 Lightning arrester |
| 03/10/1988 | DE3728202A1 Overvoltage protection device for cables |
| 03/09/1988 | EP0258664A2 Unit for securing electrical lines in distributors of telecommunication installations |
| 03/08/1988 | US4730229 Male base subscriber circuit protector module |
| 03/02/1988 | EP0257571A2 Unit for securing electrical lines in distributors of telecommunication installations |
| 02/23/1988 | US4727350 Surge absorber |
| 02/16/1988 | US4725923 Circuitry protection apparatus |
| 02/16/1988 | US4725917 Current limiting horn device for transmission line |
| 02/02/1988 | CA1232320A1 Overload protector for communication systems |
| 01/21/1988 | DE3624081A1 Overvoltage protection terminal block |