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Expired Canadian patentCanada

Electrostatic or xerographic copying or duplicating machines

CA 1061400 A · Owner: Gianella, Christiane · Inventors: Ritzerfeld, Gerhard

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

In a copying machine of the electrostatic or xerographic type having a copy paper feed path extending longitudinally therethrough between a copy paper storage station and a copy receiving station, a transparent support surface above which an original may be supported for copying in a direction parallel to the longitudinal extent of the copy path, and screening means disposed above the transparent support surface and arranged to permit copying of a predetermined portion of the original which is aligned with the longitudinal direction of the copy paper path, the improvement of cutter means mounted intermediate the storage station and the receiver station for cutting the copy paper to a …

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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 August 28, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 28, 1996.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Filed—
GrantedAugust 28, 1979
Term endedAugust 28, 1996
Patent numberCA 1061400 A
Classification (IPC)G03G15/04 +2 more

Timeline

Timeline From CIPO dates

198019821984198619881990199219941996Patent grantedAug 28, 1979Term endedAug 28, 1996

Sources & verification

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