Expired Canadian patentCanada
Production of gaseous fuel for internal combustion engines
CA 200029 A · Owner: Edward William Thomas · Inventors: Edward William Thomas
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 May 11, 1920. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 11, 1937.
- 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—
GrantedMay 11, 1920
Term endedMay 11, 1937
Patent numberCA 200029 A
Classification (IPC)F02M31/06
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.