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Expired Canadian patentCanada

Scanning optics copier with variable pitch copy capability

CA 1189129 A · Owner: Xerox Corporation · Inventors: Beery, Jack

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

The present invention is a reproduction machine having a scanning device for projecting images of documents onto a moving photosensitive surface wherein the control of the reproduction machine is a function of the size of the copy sheets. The copy sheets are fed from a copy sheet supply into communication with a registration switch to determine the length of the copy sheet. A counter responsive to the switch converts the length of the copy sheet into a scan drive signal. The scan drive signal is used to terminate the scan drive in accordance with the length of the copy sheet.

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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 18, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 18, 2002.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledDecember 8, 1981
GrantedJune 18, 1985
Term endedJune 18, 2002
Patent numberCA 1189129 A
Classification (IPC)G03G15/00 +1 more

Timeline

Timeline From CIPO dates

1982198519881991199419972000Application filedDec 8, 1981Patent grantedJune 18, 1985Term endedJune 18, 2002

Sources & verification

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