Fire detecting system
CA 1316234 C · Owner: Jaggi, Mark · Inventors: Jaggi, Mark; Guttinger, Hannes
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A fire detector comprising at least one first sensor for emitting a first output signal in response to a fire condition, at least one second sensor for detecting a source of false alarm conditions and an evaluating circuit said evaluating, circuit comprising means for providing an alarm signal in response to a value of said first output signal exceeding a threshold value, and means for changing said threshold value relative to said first output signal value in response to a second output signal from said second sensor.
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 April 13, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 13, 2010.
- 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.