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Expired Canadian patentCanada

Transportable programmed transmitter connectors for a security system

CA 1281094 C · Owner: Burgmann, Thomas A.D. · Inventors: Burgmann, Thomas A.D.; Lennartz, Gary

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

A security system for sensing the status of various security detectors used in, for example home, security such as fire, intrusion emergency and, appliance operation protection is disclosed. The detectors transmit, usually via radio frequency various, massages to a central monitor. To enable proper communication, the transmitters are programmed to transmit messages unique to the originating detector. The transmitters may be programmed at one station and then moved to the detector for insertion therein. During this transport it is important that a volatile, memory of the transmitter be retained. This is accomplished by a low power source. A disarming device is provided to disarm the …

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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 March 5, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 5, 2008.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledNovember 9, 1987
GrantedMarch 5, 1991
Term endedMarch 5, 2008
Patent numberCA 1281094 C
Classification (IPC)G08B25/00 +2 more

Timeline

Timeline From CIPO dates

1988199119941997200020032006Application filedNov 9, 1987Patent grantedMarch 5, 1991Term endedMarch 5, 2008

Sources & verification

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