TREA

The Unimin Corporation

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  • Ontario, CA
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Patents Grantslast 30 patents

  • Information Patent Grant

    Static two stage air classifier
    • Patent number 7,104,403
    • Issue date Sep 12, 2006
    • The Unimin Corporation
    • David L. Stephens
    • B07 - SEPARATING SOLIDS FROM SOLIDS SORTING
  • Information Patent Grant

    Static two stage air classifier
    • Patent number 6,942,103
    • Issue date Sep 13, 2005
    • The Unimin Corporation
    • David L. Stephens

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