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Expired Canadian patentCanada

Single channel remote site trunking

CA 2113200 C · Owner: Motorola, Inc. · Inventors: Wiens, John W.; Grube, Gary W.; Kizior, David J.

CIPO record

Overview

Drawings and full text

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

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Abstract From the Canadian patent

A system and method for providing single channel remote site trunking is described. The present invention allows for radios operating in single channel non-dedicated control channel sites (104) to communicate with radios in dedicated control channel sites (102) which are part of the system. Further the present invention will allow for non-trunked radios to utilize the benefits of trunking when operating in the single channel remote site. By mapping the ID's of the radios in the system the system can keep, track of all radios in the system whether in a remote single site (104) or in one of the dedicated control channel sites (102) and thereby link radios in one site to automatically …

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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

  • Filed July 24, 1992 and granted July 7, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 24, 2012.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 24, 2014.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJuly 24, 1992
GrantedJuly 7, 1998
Term endedJuly 24, 2012
Patent numberCA 2113200 C
Classification (IPC)H04B7/26 +2 more

Timeline

Timeline From CIPO dates

1993199519971999200120032005200720092011Application filedJuly 24, 1992Patent grantedJuly 7, 1998Term endedJuly 24, 2012

Sources & verification

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