Expired Canadian patentCanada
Hatch closure assembly
CA 1324176 C · Owner: Schlage Lock Company · Inventors: Prell, Edward T.; Jacobs, Stephen M.
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A hatch closure assembly having high security includes a hatch locking spring and lever which is actuated by an adjustable screw. The actuating screw can be turned only by a special wrench.
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 November 9, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 9, 2010.
- 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 30, 1988
GrantedNovember 9, 1993
Term endedNovember 9, 2010
Patent numberCA 1324176 C
Classification (IPC)E06B3/32 +2 more
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.