TREA

Robert C. MacElvain

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  • Opelika, AL, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Impact mill for reducing solids
    • Patent number 4,098,466
    • Issue date Jul 4, 1978
    • Robert C. MacElvain
    • B02 - CRUSHING, PULVERISING, OR DISINTEGRATING PREPARATORY TREATMENT OF GRAIN...
  • Information Patent Grant

    Material concentrator
    • Patent number 3,976,567
    • Issue date Aug 24, 1976
    • Robert C. MacElvain
    • B03 - SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES O...