TREA

Robert L. Whitfield

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  • San Mateo, CA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Putter
    • Patent number 4,805,922
    • Issue date Feb 21, 1989
    • Robert L. Whitfield
    • A63 - SPORTS GAMES AMUSEMENTS
  • Information Patent Grant

    Golf practice mat
    • Patent number 4,465,281
    • Issue date Aug 14, 1984
    • Robert L. Whitfield
    • A63 - SPORTS GAMES AMUSEMENTS