TREA

Robert C. Beals

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  • Dodge City, KS, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Drumhead with overtone suppression
    • Patent number 5,159,139
    • Issue date Oct 27, 1992
    • Evans Products, Inc.
    • Robert C. Beals
    • G10 - MUSICAL INSTRUMENTS ACOUSTICS
  • Information Patent Grant

    Muffler for bass drums
    • Patent number 5,107,741
    • Issue date Apr 28, 1992
    • Evans Products, Inc.
    • Robert C. Beals
    • G10 - MUSICAL INSTRUMENTS ACOUSTICS
  • Information Patent Grant

    Drumhead construction
    • Patent number 4,779,508
    • Issue date Oct 25, 1988
    • Evans Products, Inc.
    • Robert C. Beals
    • G10 - MUSICAL INSTRUMENTS ACOUSTICS