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Expired Canadian patentCanada

Method and apparatus for recording and using exposure data in a photographic system

CA 1319041 C · Owner: Eastman Kodak Company · Inventors: Fields, Roger Alan; Cloutier, Robert Paul

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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 method of operating a photographic camera to provide exposure information in association with a latent image picture frame includes the step of automatically providing a nominal exposure for the picture frame. An operator-selected exposure is provided for the picture frame which differs from the nominal exposure by a known under- or over-exposure. The picture frame is exposed in accordance with the operator-selected exposure and, data is recorded in association with the picture frame indicating the difference between the nominal and operator-selected exposures. A method of operating a photographic printing system is provided, responsive to the recorded data for, marking a photographic …

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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 June 15, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 15, 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.
FiledMarch 23, 1989
GrantedJune 15, 1993
Term endedJune 15, 2010
Patent numberCA 1319041 C
Classification (IPC)G03B17/24 +2 more

Timeline

Timeline From CIPO dates

1990199319961999200220052008Application filedMarch 23, 1989Patent grantedJune 15, 1993Term endedJune 15, 2010

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