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Expired Canadian patentCanada

Recirculating document feeder

CA 1100537 A · Owner: Savin Corporation · Inventors: Hori, Tatsu

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

Originals are individually separated from the bottom of a stack overlying the imaging platen of a document copier and are advanced around a first 180° bend onto the platen for copying. After they are copied, the originals are returned to the top of the stack around a second 180° bend at the other end of the platen. Each original is advanced to the imaging platen a number of times equal to the number of copies to be made to produce collated sets of copies from the copier. A relatively flat place-marking member initially placed on the uppermost original drops down when that original is fed to generate a signal indicating that the entire set of originals has been advanced once to the imaging …

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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 5, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 5, 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.
FiledMarch 8, 1979
GrantedMay 5, 1981
Term endedMay 5, 1998
Patent numberCA 1100537 A
Classification (IPC)B65H5/06 +2 more

Timeline

Timeline From CIPO dates

1980198219841986198819901992199419961998Application filedMarch 8, 1979Patent grantedMay 5, 1981Term endedMay 5, 1998

Sources & verification

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