TREA

Ketil Ronning

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  • Stavanger, NO
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Patents Grantslast 30 patents

  • Information Patent Grant

    Sleeve valve with permanent end position
    • Patent number 9,127,776
    • Issue date Sep 8, 2015
    • ARCHER OILTOOLS AS
    • Arve Byberg
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Sleeve valve with permanent end position
    • Patent number 8,783,649
    • Issue date Jul 22, 2014
    • Seawell Oil Tools AS
    • Arve Byberg
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...

Patents Applicationslast 30 patents