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Expired Canadian patentCanada

Device for the cyclic rearrangement of a pile of rectangular or square sheets

CA 1269529 C · Owner: Ackeret, Peter · Inventors: Ackeret, Peter

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

A device for the cyclic rearrangement of a pile of rectangular or square sheets, especially a pile of photographic prints, has a first (12) and a second (14) frame part which may be moved relative to one another and parallel to the main plane of the pile. On movement of the frame parts backwards and forwards, an individual sheet is removed from one end of the pile and added to the other end of the pile. A separating means (20/266) separates the individual sheet (188) from the pile and, a feeding means (460) feeds sheets to the separating means. Retaining means (460/20) holds the individual sheet in the first frame part and the remainder of the pile in the other frame part and a guide means …

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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 May 29, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 29, 2007.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledNovember 12, 1985
GrantedMay 29, 1990
Term endedMay 29, 2007
Patent numberCA 1269529 C
Classification (IPC)G03B23/02

Timeline

Timeline From CIPO dates

19861989199219951998200120042007Application filedNov 12, 1985Patent grantedMay 29, 1990Term endedMay 29, 2007

Sources & verification

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