TREA

Steven C. Speegle

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  • Flower Mound, TX, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Well safety valve
    • Patent number RE32343
    • Issue date Feb 3, 1987
    • Otis Engineering Corporation
    • Michael B. Vinzant
    • 166 - Wells
  • Information Patent Grant

    Well safety valve
    • Patent number 4,461,353
    • Issue date Jul 24, 1984
    • Otis Engineering Corporation
    • Michael B. Vinzant
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Equalizing means for well tools
    • Patent number 4,452,311
    • Issue date Jun 5, 1984
    • Otis Engineering Corporation
    • Steven C. Speegle
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Subsurface safety valve
    • Patent number 4,448,216
    • Issue date May 15, 1984
    • Otis Engineering Corporation
    • Steven C. Speegle
    • E21 - EARTH DRILLING MINING