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Expired Canadian patentCanada

Reproduction machine having duplex job recovery capabilities

CA 1104189 A · Owner: Xerox Corporation · Inventors: Steiner, Edward L.

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 method of automatic recovery of a reproduction machine in response to a malfunction to produce the selected number of copies. A running count is made of the exposures for each original and also a running count of the number of successfully delivered copies. Means are also provided for signaling whether a side one or side two copy is being delivered. In the event of a side two delivery fault the, number of side two copies successfully delivered is used to reset the exposures made and copies delivered counters.

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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 30, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 30, 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.
FiledJune 8, 1978
GrantedJune 30, 1981
Term endedJune 30, 1998
Patent numberCA 1104189 A
Classification (IPC)G03B27/52 +1 more

Timeline

Timeline From CIPO dates

1979198119831985198719891991199319951997Application filedJune 8, 1978Patent grantedJune 30, 1981Term endedJune 30, 1998

Sources & verification

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