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Len Barton

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  • Angus, GB
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Patents Grantslast 30 patents

  • Information Patent Grant

    Thermally expandable casing collar
    • Patent number 9,982,493
    • Issue date May 29, 2018
    • VANGUARD OIL TOOLS & SERVICES LLC
    • Borre Loviknes
    • E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

  • Information Patent Application

    THERMALLY EXPANDABLE CASING COLLAR
    • Publication number 20150167401
    • Publication date Jun 18, 2015
    • VANGUARD OIL TOOLS & SERVICES LLC
    • Borre Loviknes
    • E21 - EARTH DRILLING MINING