Door handle mechanisms
CA 1062311 A · Owner: G And S Allgood (Holdings) Limited · Inventors: Bates, Laurence H. J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A door handle mechanism including a handle and a mounting plate, comprising a housing secured against rotation relatively to the mounting plate, the housing containing a torsion spring engaged between the housing and part of the handle extending within the housing, and a stop plate secured on the handle part co-operable with the housing to limit handle rotation and the stop plate serving also to enclose the spring within the housing.
Read 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 11, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 11, 1996.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
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.