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Expired Canadian patentCanada

Document handling system

CA 1093140 A · Owner: Xerox Corporation · Inventors: Stemmle, Denis J.

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

An automatic document handling system for copying documents in a pre-collated recirculation manner with minimal document handling to provide pro-collated output copy sets. The documents may be loaded manually in a cassette unit removed from a xerographic copier. The cassette unit comprises two document retaining webs commonly wound on two scrolls. The documents are retained on a first web at all times. The second web separates from the first web only in the optical imaging area so as to allow unobstructed exposure of the documents. The second web separates by forming a loop around the scrolls from separating rollers at opposite sides of the imaging area and, winds up on one scroll as it is …

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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 6, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 6, 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.
FiledApril 27, 1977
GrantedJanuary 6, 1981
Term endedJanuary 6, 1998
Patent numberCA 1093140 A
Classification (IPC)G03B27/62 +2 more

Timeline

Timeline From CIPO dates

1978198119841987199019931996Application filedApril 27, 1977Patent grantedJan 6, 1981Term endedJan 6, 1998

Sources & verification

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