TREA

Chad D. Evans

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  • The Woodliands, TX, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Thru tubing tool and method
    • Patent number 7,448,446
    • Issue date Nov 11, 2008
    • Smith International, Inc.
    • John E. Campbell
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Thru tubing tool and method
    • Patent number 7,178,589
    • Issue date Feb 20, 2007
    • Smith International, Inc.
    • John E. Campbell
    • E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

  • Information Patent Application

    THRU TUBING TOOL AND METHOD
    • Publication number 20070125550
    • Publication date Jun 7, 2007
    • Smith International, Inc.
    • John E. Campbell
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    Thru tubing tool and method
    • Publication number 20040149430
    • Publication date Aug 5, 2004
    • John E. Campbell
    • E21 - EARTH DRILLING MINING