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Expired Canadian patentCanada

Paper size detecting apparatus

CA 2032178 C · Owner: Hiraoka, Satoshi · Inventors: Chuubachi, Muneki; Hiraoka, Satoshi

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 detection piece is held movably, and the size of recording paper being accommodated in a cassette case is detected in correspondence with a positional pattern of a detecting tongue provided on the detection piece. Even in cases where the number of paper sizes to be detected is large, the apparatus is capable of coping with that detection without an increase in the number of detection pieces, and contributes to the simplification of the mounting and demounting operation of the detection piece prevention of loss or erroneous mounting of the detection piece, and so on.

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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 December 13, 1990 and granted December 13, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 13, 2010.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 13, 2012.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledDecember 13, 1990
GrantedDecember 13, 1994
Term endedDecember 13, 2010
Patent numberCA 2032178 C
Classification (IPC)G08C21/00 +2 more

Timeline

Timeline From CIPO dates

1991199319951997199920012003200520072009Application filedDec 13, 1990Patent grantedDec 13, 1994Term endedDec 13, 2010

Sources & verification

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