TREA

John I. Doughty

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  • White Bear Lake, MN, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Enlarged switch area membrane switch and method
    • Patent number 4,471,177
    • Issue date Sep 11, 1984
    • Press On, Inc.
    • John I. Doughty
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Membrane switch
    • Patent number 4,440,999
    • Issue date Apr 3, 1984
    • Press On, Inc.
    • John I. Doughty
    • H01 - BASIC ELECTRIC ELEMENTS