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Expired Canadian patentCanada

Cycle-out logic for a multi-mode copier/duplicator

CA 1091287 A · Owner: Xerox Corporation · Inventors: Valentine, William L.

CIPO record

Overview

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

Apparatus and method for use in a multi-mode copier/duplicator for delaying mode changes in respone to operator commands to permit vital copier/duplicator functions to be continued without interruption for the copy in process. In particular mode changing logic enables mode changes only after vital photocopy processes are completed thus preventing undesirable running conditions.

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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 December 9, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 9, 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.
FiledFebruary 24, 1976
GrantedDecember 9, 1980
Term endedDecember 9, 1997
Patent numberCA 1091287 A
Classification (IPC)G03G15/04 +1 more

Timeline

Timeline From CIPO dates

1977198019831986198919921995Application filedFeb 24, 1976Patent grantedDec 9, 1980Term endedDec 9, 1997

Sources & verification

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