TREA

David W. Bull

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  • Hersey, MI, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Electrical switch
    • Patent number 4,300,026
    • Issue date Nov 10, 1981
    • Nartron Corporation
    • David W. Bull
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Electrical switch
    • Patent number 4,283,611
    • Issue date Aug 11, 1981
    • Nartron Corporation
    • David W. Bull
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Electrical switch
    • Patent number 4,204,102
    • Issue date May 20, 1980
    • Nartron Corporation
    • David W. Bull
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Multi-function electrical switch assembly
    • Patent number 4,081,633
    • Issue date Mar 28, 1978
    • Nartron Corporation
    • David W. Bull
    • H01 - BASIC ELECTRIC ELEMENTS