Slam latch
CA 2097490 C · Owner: Krape, Paul · Inventors: Krape, Paul; Schlack, Richard E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A slam latch for securing a slideable window or door to a corresponding frame consists of a housing a catch, assembly and a keeper assembly wherein the catch assembly is spring biased downward against the base plate of the housing so as to become operatively engaged with the keeper means attached to the frame when the door or window is moved to a closed position causing the catch and keeper to become in juxtaposition to one another.
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 1, 1993 and granted March 30, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 1, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 1, 2015.
- 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.