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Donald H. Yowell

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  • Bethlehem, PA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Mixing-cutting paddle
    • Patent number 5,462,355
    • Issue date Oct 31, 1995
    • Donald H. Yowell
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • Information Patent Grant

    Mixing-cutting paddle
    • Patent number 5,354,129
    • Issue date Oct 11, 1994
    • Donald H. Yowell
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL