Lever lock
CA 2085098 C · Owner: Ross, Beverley Ann · Inventors: Ross, Keith James; Ross, Beverley Ann; Ross, Geoffrey Howard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A bolt-operated, vertical-lift lever lock (1) having a lockcase (3) or lock base and a lock cap (4) characterized by the, provision of a lever housing (8) attached to at least one of the lockcase or lock base and lock cap wherein the lever housing is so, constructed that the or each lever (6 7) may slide within the lever housing and be protected against unauthorised lateral or longitudinal forces applied to the bolt (5).
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
- Filed June 13, 1991 and granted June 29, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 13, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 13, 2013.
- 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.