TREA

John Stokes Knowlton

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  • Houston, TX, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Vertical lift rotary table
    • Patent number 11,118,413
    • Issue date Sep 14, 2021
    • Ensco International Incorporated
    • Richard Robert Roper
    • E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

  • Information Patent Application

    VERTICAL LIFT ROTARY TABLE
    • Publication number 20200190918
    • Publication date Jun 18, 2020
    • ENSCO International Incorporated
    • Richard Robert Roper
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    TOOL JOINT POSITIONING
    • Publication number 20190078401
    • Publication date Mar 14, 2019
    • ENSCO International Incorporated
    • John Stokes Knowlton
    • E21 - EARTH DRILLING MINING