TREA

William Bertram

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  • Ely, GB
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Patents Grantslast 30 patents

  • Information Patent Grant

    Drive mechanism
    • Patent number 8,544,560
    • Issue date Oct 1, 2013
    • Schlumberger Technology Corporation
    • William Bertram
    • E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

  • Information Patent Application

    DRIVE MECHANISM
    • Publication number 20110100640
    • Publication date May 5, 2011
    • SCHLUMBERGER TECHNOLOGY CORPORATION
    • William Bertram
    • E21 - EARTH DRILLING MINING