System for control and surveillance of emergency exits
CA 1231419 A · Owner: Constructions Electroniques De La Ferte-Sous- Jouarre, S.A. · Inventors: Verslycken, Alain R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process to control emergency exits in a building comprising at least a security guard post each emergency exit being provided with an unlocking component, characterized in that activation of the unlocking component for the purpose of opening the emergency exit initiates the request of information from the security guard post and sets off a first time delay To during which the security guard may forbid the opening of the exit of concern for a second time delay To, the opening of the exit being authored at the end of the first time delay To or in the case of intervention by the security guard, at the end of the second time delay To.
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 January 12, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 12, 2005.
- 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.