TREA

David F. Johnston

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  • Riyadh, SA
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Patents Grantslast 30 patents

  • Information Patent Grant

    Hi jump step saver standard
    • Patent number 4,483,073
    • Issue date Nov 20, 1984
    • David F. Johnston
    • A63 - SPORTS GAMES AMUSEMENTS
  • Information Patent Grant

    Vaulting pole end plug
    • Patent number 4,468,024
    • Issue date Aug 28, 1984
    • David F. Johnston
    • A63 - SPORTS GAMES AMUSEMENTS