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Expired Canadian patentCanada

Control system for fire suppression apparatus

CA 1340075 C · Owner: Shaw, Bon F. · Inventors: Bond, Gary M.; Fields, Randy R.; Shaw, Bon F.

CIPO record

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

An environmental detection system particularly useful for fire detection and suppression is provided which ensures high reliability in operation and high reliability in preventing false operation. The preferred system includes a microprocessor-based software-governed, control panel connected to one or more detector loops. Each loop includes a plurality of parallel-coupled, addressable detectors which send analog signals to the control panel representative of an environmental parameter such as smoke obscuration along with reference and identification signals. The preferred system provides automatic calibration and test of the detectors automatic testing under load of the backup batteries …

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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 October 6, 1998. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 6, 2015.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 27, 1989
GrantedOctober 6, 1998
Term endedOctober 6, 2015
Patent numberCA 1340075 C
Classification (IPC)G08B29/18 +2 more

Timeline

Timeline From CIPO dates

199019931996199920022005200820112014Application filedJune 27, 1989Patent grantedOct 6, 1998Term endedOct 6, 2015

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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.