TREA

Kenneth W. Luthy

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  • Austin, TX, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Envelope for transparency
    • Patent number 5,568,210
    • Issue date Oct 22, 1996
    • Minnesota Mining and Manufacturing Company
    • Douglas A. Kiehne
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Envelope for transparency
    • Patent number 5,371,560
    • Issue date Dec 6, 1994
    • Minnesota Mining and Manufacturing Company
    • Douglas A. Kiehne
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Envelope for transparencies
    • Patent number 5,266,987
    • Issue date Nov 30, 1993
    • Minnesota Mining and Manufacturing Company
    • Douglas A. Kiehne
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Envelope for transparency having increased flexibility
    • Patent number 5,237,355
    • Issue date Aug 17, 1993
    • Minnesota Mining and Manufacturing Company
    • Douglas A. Kiehne
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY