TREA

Jay J. Litrap

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  • Seattle, WA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Gold pan and classifier
    • Patent number 4,289,241
    • Issue date Sep 15, 1981
    • Jay J. Litrap
    • B03 - SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES O...