TREA

John Martin Clegg

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  • Tewkesbury, GB
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Patents Grantslast 30 patents

  • Information Patent Grant

    Rotary drill bit
    • Patent number 7,318,492
    • Issue date Jan 15, 2008
    • Reedhycalog UK Ltd.
    • Graham Richard Watson
    • E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

  • Information Patent Application

    Rotary Drill Bit
    • Publication number 20060037785
    • Publication date Feb 23, 2006
    • Graham Richard Watson
    • E21 - EARTH DRILLING MINING