Protected closed space with an electrical interruptor and its application
CA 1262762 C · Owner: N.V. Philips Gloeilampenfabrieken · Inventors: Dalphin, Claude
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A protected closed space (L) comprises at least one wall element (E) provided with an electrical interruptor (C1 C2) in, turn protected by a thin and flexible probe (S B) which on the, one hand transmits the external mechanical control movement (P) and on the other hand permits the detection of an intrusion at this weak point of the protected closed space. Application: protected closed space with key-board for providing the access code, especially for an electronic payment system.
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 November 7, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 7, 2006.
- 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.