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Richard M. Dunham

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  • Salisbury, NH, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Arc interrupting lamp ballast
    • Patent number 5,051,667
    • Issue date Sep 24, 1991
    • Walker Power, Inc.
    • Richard M. Dunham
    • H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Ion nitriding power supply
    • Patent number 4,733,137
    • Issue date Mar 22, 1988
    • Walker Magnetics Group, Inc.
    • Richard M. Dunham
    • C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...