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Expired Canadian patentCanada

Telephone apparatus and a method of controlling same

CA 1301386 C · Owner: Kabushiki Kaisha Toshiba · Inventors: Sasano, Jun

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

This invention relates to a telephone apparatus and a method of controlling the telephone apparatus wherein, where a, calling operation conflicts with a call-receiving operation calling processing and call-receiving processing are performed so that an intention of an operator at a calling side may be respected. A timer is caused to start to operate in response to an incoming signal detected by an incoming signal detecting unit. Where an off-hook operation is detected by an off-hook detecting unit before the expiration of a timer time set at the timer, a line control unit treats the off-hook operation as an off-hook operation for a calling operation. Where an off-hook operation is detected …

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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 May 19, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 19, 2009.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 1, 1989
GrantedMay 19, 1992
Term endedMay 19, 2009
Patent numberCA 1301386 C
Classification (IPC)H04M7/00 +2 more

Timeline

Timeline From CIPO dates

1990199219941996199820002002200420062008Application filedMarch 1, 1989Patent grantedMay 19, 1992Term endedMay 19, 2009

Sources & verification

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