Expired Canadian patentCanada
Piston packing
CA 64975 A · Owner: Heald Ramsdell, Fred · Inventors: Heald Ramsdell, Fred
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 November 17, 1899. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 17, 1916.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJuly 11, 1899
GrantedNovember 17, 1899
Term endedNovember 17, 1916
Patent numberCA 64975 A
Classification (IPC)—
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.