TREA

Alexandra Vasil'evna Rogacheva

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  • Southampton, GB
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Patents Applicationslast 30 patents

  • Information Patent Application

    DOWNHOLE POWER GENERATION
    • Publication number 20110148656
    • Publication date Jun 23, 2011
    • EXPRO NORTH SEA LIMITED
    • Steven Martin Hudson
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    CONTROL OF SUB SURFACE SAFETY VALVES
    • Publication number 20110094752
    • Publication date Apr 28, 2011
    • EXPRO NORTH SEA LIMITED
    • Steven Martin Hudson
    • E21 - EARTH DRILLING MINING