Programmable card actuated lock
CA 1050134 A · Owner: Cannon, John W. · Inventors: Cannon, John W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
an access control device operated by a magnetically coded card. A self-contained unit with a card receiving slot card reader, memory and logic and control circuitry in a single small package, An access control device providing a unique number for each issued card and including a programmable memory providing storage for the code of each card permitted access and of each card the permission of which is subsequently voided. An access control device of a size suitable for positioning at the location where access is being controlled and having a capability of several thousand different card codes, without requiring a central station or wiring interconnections between devices or between the …
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 March 6, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 6, 1996.
- 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.