Expired Canadian patentCanada
Gaseous electric discharge device
CA 342425 A · Owner: The Canadian General Electric Company · Inventors: Marcello Pirani
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordRead 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, 1934. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 19, 1951.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Filed—
GrantedJune 19, 1934
Term endedJune 19, 1951
Patent numberCA 342425 A
Classification (IPC)H01J1/00 +2 more
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.