TREA

David Maddock

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  • Bloomington, IN, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Earth excavating apparatus
    • Patent number 5,864,970
    • Issue date Feb 2, 1999
    • David C. Maddock
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING

Patents Applicationslast 30 patents