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Expired Canadian patentCanada

Screen cleaning device

CA 1098163 A · Owner: Xerox Corporation · Inventors: Menon, Sukumaran K.; Guran, Zenon

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 electrophotographic printing machine in which particles are cleaned from a half-tone image screen. The screen is movable from an operative position closely adjacent to the printing machine photoconductive member to an inoperative location remote therefrom. As the screen moves in one direction a cleaning, device moves in a direction opposed thereto so as to remove particles therefrom. The foregoing abstract is not intended to define the invention disclosed in the specification nor is it intended to, be limiting as to the scope of the invention in any way.

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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 March 24, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 24, 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.
FiledDecember 9, 1976
GrantedMarch 24, 1981
Term endedMarch 24, 1998
Patent numberCA 1098163 A
Classification (IPC)G03G15/01 +2 more

Timeline

Timeline From CIPO dates

19771980198319861989199219951998Application filedDec 9, 1976Patent grantedMarch 24, 1981Term endedMarch 24, 1998

Sources & verification

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