Door lock guard
CA 1291188 C · Owner: Matiowsky, Peter · Inventors: Matiowsky, Peter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A door lock guard for use with a conventional knob operated lock of the mortise and tenon-type is commonly a complicated structure. A relatively simple guard of the type in question includes an elongated metal body of L-shaped cross section, one arm of the body being connected to the outer surface of the door near the lock edge, so that the other arm of the body projects outwardly for entering a slot in the door jamb when the door is closed. Such other arm blocks access to the lock bolt by means of a credit card or similar article.
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 October 22, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 22, 2008.
- 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.