Electrode protecting means for electric discharge lamps
CA 1067949 A · Owner: North American Philips Corporation · Inventors: Aptt, Harry W.; Clune, James P.; Marci, Sebastian J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A discharge lamp having two opposite electrodes and wire probes located in the vicinity of those electrodes for collecting electrons during the positive half-cycle of the potential of an electrode each, wire probe provided with a dielectric material such as boron nitride for storing collected electrons and attracting a part of the positive ions during the negative half-cycle of the potential of that electrode. - 7 -
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 December 11, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 11, 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.