TREA

Charles E. Mason

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  • Fairmont, WV, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Pump down tool and check valve
    • Patent number 4,498,532
    • Issue date Feb 12, 1985
    • Conoco Inc.
    • Charles E. Mason
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Drilling fluid circulation system
    • Patent number 4,247,312
    • Issue date Jan 27, 1981
    • Conoco, Inc.
    • Pramod C. Thakur
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Method for rotating hose
    • Patent number 4,098,415
    • Issue date Jul 4, 1978
    • Continental Oil Company
    • Charles E. Mason
    • B66 - HOISTING LIFTING HAULING