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Charles A. Butterfield, JR.

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  • Cypress, TX, US
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Patents Grantslast 30 patents

Patents Applicationslast 30 patents

  • Information Patent Application

    DOWNHOLE RELEASE JOINT WITH RADIALLY EXPANDABLE MEMBER
    • Publication number 20120152567
    • Publication date Jun 21, 2012
    • Enventure Global Technology, LLC
    • Richard M. Whiddon
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    DOWNHOLE RELEASE JOINT WITH RADIALLY EXPANDABLE MEMBER
    • Publication number 20120152565
    • Publication date Jun 21, 2012
    • Enventure Global Technology, LLC
    • Frederick C. Bennett
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    TUBULAR LINER
    • Publication number 20090090516
    • Publication date Apr 9, 2009
    • Enventure Global Technology, LLC
    • Frank V. DeLucia
    • E21 - EARTH DRILLING MINING