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Stephen Williams

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  • Stroud, GB
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Patents Grantslast 30 patents

  • Information Patent Grant

    Drill bit
    • Patent number 9,869,131
    • Issue date Jan 16, 2018
    • Nov Downhole Eurasia Limited
    • Stephen Williams
    • E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

  • Information Patent Application

    COMPONENT OF BOTTOM HOLE ASSEMBLY HAVING UPWARDLY-DIRECTED FLUID CL...
    • Publication number 20160290067
    • Publication date Oct 6, 2016
    • NOV Downhole Eurasia Limited
    • Robert Peter Douglas Tipples
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    Drill Bit
    • Publication number 20150345228
    • Publication date Dec 3, 2015
    • NOV DOWNHOLE EURASIA LIMITED
    • Stephen Williams
    • E21 - EARTH DRILLING MINING