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Expired Canadian patentCanada

System for synthesizing strip-multiplexed holograms

CA 1089262 A · Owner: Mcgrew, Stephen P. · Inventors: Mcgrew, Stephen P.

CIPO record

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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 system for synthesizing strip-multiplexed holograms with or without coherent light, from a plurality of two-dimensional images. The two-dimensional images may be formed by a motion picutre film of a rotating subject such that each image is a view of the subject from a different angle. The images are then nondiffusely and anamorphicly projected by a lens system which compresses the image in a first direction and expands the image in a second direction orthogonal to the first direction. The projected image or object beam is then superimposed on the reference beam by a lens-beamsplitter which transforms the substantially planar object beam into a substantially cylindrical wavefront and …

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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 11, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 11, 1997.
  • 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 22, 1977
GrantedNovember 11, 1980
Term endedNovember 11, 1997
Patent numberCA 1089262 A
Classification (IPC)G03H1/08 +2 more

Timeline

Timeline From CIPO dates

1978198019821984198619881990199219941996Application filedAug 22, 1977Patent grantedNov 11, 1980Term endedNov 11, 1997

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