Gary L. Marsh

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New Orleans, LA, US

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Patents Grantslast 30 patents

Information Patent Grant
Gas kick detector
- Patent number 5,006,845
- Issue date Apr 9, 1991
- Honeywell Inc.
- Henry V. Calcar
- E21 - EARTH DRILLING MINING
Information Patent Grant
Subsea power fluid accumulator
- Patent number 4,649,704
- Issue date Mar 17, 1987
- Shell Offshore Inc.
- Gary L. Marsh
- B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
Information Patent Grant
Telemetering drill string with piped electrical conductor
- Patent number 4,095,865
- Issue date Jun 20, 1978
- Shell Oil Company
- Early B. Denison
- E21 - EARTH DRILLING MINING