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Expired Canadian patentCanada

Sheet feed apparatus

CA 1102840 A · Owner: Ricoh Company, Limited · Inventors: Suzuki, Minoru

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 sheet feed apparatus for use with a copying machine comprises a sheet stacking means for stacking recording sheets thereon, and a pair of sheet feed rollers for feeding the recording sheets one by one which are arranged, coaxially on a driving shaft disposed on the sheet stacking means, and one sheet feed roller is located at an appropriate position and the other sheet feed roller is movable along the driving shaft. The sheet stacking means can take two positions, a sheet feed position and a sheet replenishment position, by sliding the sheet stacking means in and out of the body of the copying machine. When the sheet stacking means is slided out of the body of the copying machine to 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 June 9, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 9, 1998.
  • 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 23, 1978
GrantedJune 9, 1981
Term endedJune 9, 1998
Patent numberCA 1102840 A
Classification (IPC)B65H5/06 +2 more

Timeline

Timeline From CIPO dates

1979198119831985198719891991199319951997Application filedNov 23, 1978Patent grantedJune 9, 1981Term endedJune 9, 1998

Sources & verification

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