Electronic access control and security system
CA 2197153 A1 · Owner: Krone Aktiengesellschaft · Inventors: Kraft, Wolfgang; Kortland, Andries
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to an electronic access control and security system against unauthorised opening of closed objects in particular, control and, distribution cabinets for communication and data transfer. The object of the present invention, namely, to provide an electronic access control and security system by, means of which security against unauthorised opening is further improved and continuously-updated information about the condition of the object to be protected is secured, is achieved by having within a multi-stage hierarchy a central control unit connected by at least one decentral communication multiplexer to at least one local data processor. Each decentral communication …
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 February 10, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 10, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 10, 2019.
- 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.