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Expired Canadian patentCanada

Three-dimensional display system

CA 1311569 C · Owner: Mcconnell, Denis B. · Inventors: Mcconnell, Denis B.

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

Denis B. McConnell, ABSTRACT OF THE DISCLOSURE Three-dimensional display systems are disclosed. In one embodiment a parallel laser beam is expanded and, projected to a moving screen. Two-dimensional magnetooptic display means are provided in the path of the projected beam to display synchronously controlled twodimensional images on the screen.

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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 December 15, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 15, 2009.
  • 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 7, 1988
GrantedDecember 15, 1992
Term endedDecember 15, 2009
Patent numberCA 1311569 C
Classification (IPC)G09G3/00 +2 more

Timeline

Timeline From CIPO dates

1989199219951998200120042007Application filedNov 7, 1988Patent grantedDec 15, 1992Term endedDec 15, 2009

Sources & verification

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