TREA

Charles B. Jewison

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  • Batavia, IL, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Foldable portable overhead projector
    • Patent number 4,969,733
    • Issue date Nov 13, 1990
    • Dukane Corporation
    • Charles B. Jewison
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Front/rear projection system
    • Patent number 4,331,397
    • Issue date May 25, 1982
    • Dukane Corporation
    • Charles B. Jewison
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY