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Joseph W. Drapp

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  • St. Louis, MO, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Transformer structure
    • Patent number 4,547,721
    • Issue date Oct 15, 1985
    • Joseph W. Drapp
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Transformer
    • Patent number 4,470,006
    • Issue date Sep 4, 1984
    • Joseph W. Drapp
    • H01 - BASIC ELECTRIC ELEMENTS