Expired Canadian patentCanada
Draft apparatus for railway cars
CA 58641 A · Owner: The Thornburgh Coupler Attachment Company · Inventors: Thornburgh, William
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 January 12, 1898. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 12, 1915.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledNovember 19, 1897
GrantedJanuary 12, 1898
Term endedJanuary 12, 1915
Patent numberCA 58641 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.