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Expired Canadian patentCanada

Camera having disconnectable manual controls for film unit removal assembly and a shade assembly

CA 1313326 C · Owner: Johnson, Bruce K. · Inventors: Johnson, Bruce K.; Whiteside, George D.

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

A photographic camera of the instant type having an imbibition chamber for storing exposed film units during their development. The imbibition chamber has a window through which an image in an exposed film in the chamber can be viewed. Manually operative means control the movement of a curtain or blind from a position covering the window to an uncovering position and movement of an exposed film unit to a position where it exits from the chamber via an egress door. Automatic means is provided for rendering the manually operative means ineffective to perform such functions during the exposure and development of a film unit.

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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 February 2, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 2, 2010.
  • 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 22, 1988
GrantedFebruary 2, 1993
Term endedFebruary 2, 2010
Patent numberCA 1313326 C
Classification (IPC)G03B17/52

Timeline

Timeline From CIPO dates

19891992199519982001200420072010Application filedDec 22, 1988Patent grantedFeb 2, 1993Term endedFeb 2, 2010

Sources & verification

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