TREA

Elmer J. Frey

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  • Lexington, MA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Inertial borehole survey system
    • Patent number 4,537,067
    • Issue date Aug 27, 1985
    • Wilson Industries, Inc.
    • Harper E. Sharp
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Inertial borehole survey system
    • Patent number 4,454,756
    • Issue date Jun 19, 1984
    • Wilson Industries, Inc.
    • Harper E. Sharp
    • E21 - EARTH DRILLING MINING