TREA

Willard D. Harris

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  • Spring, TX, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Method for forming a geothermal well
    • Patent number 9,109,398
    • Issue date Aug 18, 2015
    • Mechanical & Electrical Concepts, Inc.
    • Willard D. Harris
    • F24 - HEATING RANGES VENTILATING

Patents Applicationslast 30 patents