TREA

Jean Duret

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  • Montpellier, FR
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Patents Grantslast 30 patents

  • Information Patent Grant

    Joint for steel tubes
    • Patent number 4,550,937
    • Issue date Nov 5, 1985
    • Vallourec SA
    • Jean Duret
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Closed angle thread pipe joint
    • Patent number 4,494,777
    • Issue date Jan 22, 1985
    • Vallourec, S. A.
    • Jean Duret
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Cylindro-conical pipe joint
    • Patent number 4,398,756
    • Issue date Aug 16, 1983
    • Vallourec, S. A.
    • Jean Duret
    • E21 - EARTH DRILLING MINING