TREA

David Kempher

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  • Houston, TX, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Sleeve assembly for downhole tools
    • Patent number 8,151,893
    • Issue date Apr 10, 2012
    • Schlumberger Technology Corporation
    • Raymond V. Nold
    • E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents