TREA

James Campbell

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  • Lexington, KY, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Marching snare drumhead patch
    • Patent number 6,291,753
    • Issue date Sep 18, 2001
    • J. D'Addario & Company, Inc.
    • James Campbell
    • G10 - MUSICAL INSTRUMENTS ACOUSTICS
  • Information Patent Grant

    Floating staccato waffle disk
    • Patent number 6,245,979
    • Issue date Jun 12, 2001
    • J. D'Addario & Company, Inc.
    • James Campbell
    • G10 - MUSICAL INSTRUMENTS ACOUSTICS