TREA

Douglas A. Wilke

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  • Glen Head, NY, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Solar air duct
    • Patent number 4,393,862
    • Issue date Jul 19, 1983
    • The United States of America as represented by the Secretary of Agriculture
    • Douglas A. Wilke
    • F24 - HEATING RANGES VENTILATING

Patents Applicationslast 30 patents