TREA

Roger Mitchell

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  • Minneapolis, MN, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Digital meter
    • Patent number 4,804,908
    • Issue date Feb 14, 1989
    • Roger E. Mitchell
    • G01 - MEASURING TESTING
  • Information Patent Grant

    Ground fault interrupter tester
    • Patent number 4,280,092
    • Issue date Jul 21, 1981
    • Ideal Industries, Inc.
    • Peter M. Wells
    • G01 - MEASURING TESTING
  • Information Patent Grant

    Camera accessory and cartridge
    • Patent number 4,058,823
    • Issue date Nov 15, 1977
    • Visual Graphics Corporation
    • Roger Mitchell
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY