Expired Canadian patentCanada
Mining machine chain carrying bars and impellers for the chains thereof
CA 584342 A · Owner: Joy Manufacturing Company · Inventors: Harold F. Silver
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 September 29, 1959. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 29, 1976.
- 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—
GrantedSeptember 29, 1959
Term endedSeptember 29, 1976
Patent numberCA 584342 A
Classification (IPC)E02F3/08
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.