TREA

David C. Cobbs

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  • Glenpool, OK, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Rock saw
    • Patent number 5,295,735
    • Issue date Mar 22, 1994
    • David C. Cobbs
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Geophone implantation system
    • Patent number 5,206,840
    • Issue date Apr 27, 1993
    • David C. Cobbs
    • G01 - MEASURING TESTING
  • Information Patent Grant

    Rock cutting tool
    • Patent number 4,907,664
    • Issue date Mar 13, 1990
    • James H. Cobbs
    • E21 - EARTH DRILLING MINING