TREA

Douglas R. Henley

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  • Chunky, MS, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Lead arm development bat
    • Patent number 4,836,541
    • Issue date Jun 6, 1989
    • Douglas R. Henley
    • A63 - SPORTS GAMES AMUSEMENTS
  • Information Patent Grant

    Ball hitting practice device
    • Patent number 4,828,262
    • Issue date May 9, 1989
    • Douglas R. Henley
    • A63 - SPORTS GAMES AMUSEMENTS