TREA

Welker; Charles D.

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  • Plano, TX, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Foamed concrete composition and process
    • Patent number 6,153,005
    • Issue date Nov 28, 2000
    • Welker; Charles D.
    • Charles D. Welker
    • C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES