Marion H. Gay

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Houston, TX, US

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Patents Grantslast 30 patents

Information Patent Grant
Subsurface safety valves and method and apparatus for their operation
- Patent number 5,205,355
- Issue date Apr 27, 1993
- Otis Engineering Corp.
- Marion H. Gay
- E21 - EARTH DRILLING MINING
Information Patent Grant
Subsurface safety valves and method and apparatus for their operation
- Patent number 5,170,845
- Issue date Dec 15, 1992
- Otis Engineering Corp.
- Marion H. Gay
- E21 - EARTH DRILLING MINING