with drilling fluid supply to the bearing

Industry

  • CPC
  • E21B2010/243
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Patents Grantslast 30 patents

  • Information Patent Grant

    Semi-sealed rotary drill tool

    • Patent number 10,605,006
    • Issue date Mar 31, 2020
    • Sandvik Intellectual Property AB
    • Karl-Oskar Finnman
    • E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents