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Philip David Campbell

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  • Stillwater, OK, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Exhaust assembly cooling system
    • Patent number 10,100,579
    • Issue date Oct 16, 2018
    • The Charles Machine Works, Inc.
    • Philip David Campbell
    • E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

  • Information Patent Application

    Exhaust Assembly Cooling System
    • Publication number 20160356191
    • Publication date Dec 8, 2016
    • The Charles Machine Works, Inc.
    • Philip David Campbell
    • E21 - EARTH DRILLING MINING