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Expired Canadian patentCanada

Sheet feeder with emigrating retard member

CA 1069141 A · Owner: Xerox Corporation · Inventors: Schoppe, Wayne F.

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 friction retard sheet feeding apparatus including a feed member for engaging a stack of sheets and a retard member having a friction surface arranged in nipped engagement with the feed member. The sheets are supported in a stack configuration upon an elevator arranged for movement between an elevated position for sheet feeding and a lowered position. Drives are provided to raise the elevator. An incrementing apparatus is provided for advancing the retard member relative to the feed member in response to the operation of the drives for elevating the stack.

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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 January 1, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 1, 1997.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Filed—
GrantedJanuary 1, 1980
Term endedJanuary 1, 1997
Patent numberCA 1069141 A
Classification (IPC)B65H3/06 +2 more

Timeline

Timeline From CIPO dates

198119831985198719891991199319951997Patent grantedJan 1, 1980Term endedJan 1, 1997

Sources & verification

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