Security system
CA 1101513 A · Owner: Lock (J.S.) Company · Inventors: Genest, Leonard J.; Madenlian, Vache B.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Inventors: Leonard J. Genest and Vache B. Madenlian Title: SECURITY SYSTEM, Docket No.: 1659-115 ABSTRACT, A security system for controlling access to a locked area and updating the lock includes a central console for generating key codes, encoding key cards and, storing the codes in a memory. Each lock may be opened by a properly encoded key card . The guest lock code is automatically changed each time a new guest key card is generated and used. In order to operate the console, an authorization card bearing an appropriate authorization code is required. The authorization codes are fixed in the memory of the console. In addition, the system includes means inside the locks enabling a group …
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 May 19, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 19, 1998.
- 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.