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Expired Canadian patentCanada

Photographic film stacking device

CA 1291772 C · Owner: Ciba-Geigy Corporation · Inventors: Barker, Paul Dean; Fleckenstein, Allen Eugene; Davis, David Lawrence

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

Abstract of the Disclosure A film strip stacking device is provided for use in an order finishing station in conjunction with the negative cutter to accept film strips from the negative cutter which cuts the film into strips. The strips are collected into astack which can then be loaded into a film sleeve prior to return to the customer The film strip stacker of the present invention includes a channel divided into an upper and lower portion. The upper portion being adapted to receive initially the film from the negative cutter and including parallel railsmovable to contact the film strip after it is cut and while it is in the upper portion of the channel and force the film to deform …

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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 November 5, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 5, 2008.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 31, 1987
GrantedNovember 5, 1991
Term endedNovember 5, 2008
Patent numberCA 1291772 C
Classification (IPC)G03D15/00 +1 more

Timeline

Timeline From CIPO dates

1988199119941997200020032006Application filedAug 31, 1987Patent grantedNov 5, 1991Term endedNov 5, 2008

Sources & verification

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