Surge arrester
CA 1056902 A · Owner: Siemens Aktiengesellschaft · Inventors: Peche, Gerhard; Lange, Gerhard; Gruneberg, Dieter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention discloses a surge voltage arrester comprising two electrodes inserted in gas-tight fashion in opposite ends of a tubular insulating body, in which the inner surface of the insulating body is provided with at least one electrically conducting coating covering at least a periphoral region of an area of the inner surface the normal of which lies at, least approximately at right-angles to the axis of the tubular body.
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted June 19, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 19, 1996.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.