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Expired Canadian patentCanada

Hybrid camera arrangement

CA 1208061 A · Owner: Polaroid Corporation · Inventors: Smyth, Marie T.; Whiteside, George D.; Keith, Laura E.

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

Title: HYBRID CAMERA ARRANGEMENT, ABSTRACT OF THE DISCLOSURE A "hybrid" exposure control system for a photographic camera apparatus controls exposure in response to both the firing of a quench strobe at an appropriate size aperture corresponding to the determined camera-to-subject distance and to the subsequent quenching of the strobe in response to the detection and integration of reflected strobe light from the scene in correspondence with the scene light admitted to the film plane. An increased degree of exposure correction can thus be made possible since a slight error in determining the camera-to-subject range can be compensated by the detection and integration of reflected strobe …

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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 July 22, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 22, 2003.
  • 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 8, 1983
GrantedJuly 22, 1986
Term endedJuly 22, 2003
Patent numberCA 1208061 A
Classification (IPC)G03B7/16 +1 more

Timeline

Timeline From CIPO dates

1984198619881990199219941996199820002002Application filedNov 8, 1983Patent grantedJuly 22, 1986Term endedJuly 22, 2003

Sources & verification

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