TREA

David A. Kirk

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  • Pittsburgh, PA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Magnesite-carbon refractories
    • Patent number 4,957,887
    • Issue date Sep 18, 1990
    • Dresser Industries, Inc.
    • David J. Michael
    • C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
  • Information Patent Grant

    Magnesite-carbon refractories
    • Patent number 4,912,068
    • Issue date Mar 27, 1990
    • Dresser Industries, Inc.
    • David J. Michael
    • C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES