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Expired Canadian patentCanada

Radio pager having local- and wide-area reception modes

CA 1283708 C · Owner: Nagata, Koichi · Inventors: Nagata, Koichi; Minami, Yohichiro

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

Radio Pager Having Local- and Wide--Area Reception Modes" ABSTRACT OF THE DISCLOSURE, Disclosed is a radio pager wherein a manually controlled channel selector selects a first channel to operate the pager in a local area reception mode and selects a second channel to operate it in a wide area reception mode. A receiving circuit is responsive to the selector for receiving a first paging signal transmitted on the first channel and receiving a second paging signal transmitted on the second channel, the first and second paging signals containing address signals in first and second code formats respectively. A decoder is responsive to the manual selector for comparing the address signal of 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 April 30, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 30, 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.
FiledApril 4, 1986
GrantedApril 30, 1991
Term endedApril 30, 2008
Patent numberCA 1283708 C
Classification (IPC)G08B3/10 +1 more

Timeline

Timeline From CIPO dates

19871990199319961999200220052008Application filedApril 4, 1986Patent grantedApril 30, 1991Term endedApril 30, 2008

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