TREA

Leon Walker

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  • Welch, OK, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Air powered rocket sled game
    • Patent number 4,283,053
    • Issue date Aug 11, 1981
    • Herman Parker
    • A63 - SPORTS GAMES AMUSEMENTS
  • Information Patent Grant

    Ore classifier
    • Patent number 4,237,001
    • Issue date Dec 2, 1980
    • Berry; Howard S.
    • Leon Walker
    • B03 - SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES O...
  • Information Patent Grant

    Coal washing apparatus
    • Patent number 4,159,242
    • Issue date Jun 26, 1979
    • Leon Walker
    • B03 - SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES O...