TREA

Haven L. Keller

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  • Hagerstown, MD, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Reversible vane for a throwing wheel
    • Patent number D316717
    • Issue date May 7, 1991
    • Pangborn Corporation
    • James H. Carpenter
    • D15 - Machines not elsewhere specified
  • Information Patent Grant

    Apparatus for conditioning granular material
    • Patent number 4,739,937
    • Issue date Apr 26, 1988
    • Pangborn Corporation
    • James H. Carpenter
    • B02 - CRUSHING, PULVERISING, OR DISINTEGRATING PREPARATORY TREATMENT OF GRAIN...