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Rick D. Johnson

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  • Fort Smith, AR, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Plugging a mined-through well
    • Patent number 8,727,028
    • Issue date May 20, 2014
    • Effective Exploration, LLC
    • Rick D Johnson
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Plugging a mined-through well
    • Patent number 8,033,337
    • Issue date Oct 11, 2011
    • Vitruvian Exploration, LLC
    • Rick D. Johnson
    • E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

  • Information Patent Application

    Plugging a Mined-Through Well
    • Publication number 20120199348
    • Publication date Aug 9, 2012
    • Vitruvian Exploration, LLC, a corporation
    • Rick D. Johnson
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    Plugging a Mined-Through Well
    • Publication number 20090020286
    • Publication date Jan 22, 2009
    • Rick D. Johnson
    • E21 - EARTH DRILLING MINING