David Ross

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Gretna, LA, US

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Patents Grantslast 30 patents

Information Patent Grant
Subsea shelter and system for installation
- Patent number 5,259,458
- Issue date Nov 9, 1993
- Louis E. Schaefer
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
System for preventing cutting gas explosion during subterranean pip...
- Patent number 5,238,069
- Issue date Aug 24, 1993
- Superior Offshore Services, Inc.
- Louis E. Schaefer
- E21 - EARTH DRILLING MINING