TREA

Efraim Pecht

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  • Calgary, CA
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Patents Grantslast 30 patents

  • Information Patent Grant

    In-drilling alignment
    • Patent number 7,823,661
    • Issue date Nov 2, 2010
    • Martin P. Mintchev
    • E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

  • Information Patent Application

    In-drilling alignment
    • Publication number 20090314546
    • Publication date Dec 24, 2009
    • Martin P. Mintchev
    • E21 - EARTH DRILLING MINING