Douglas B Bell

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Patents Applicationslast 30 patents

Information Patent Application
METHOD AND APPARATUS FOR THROUGH ROTARY SUB-SEA PILE-DRIVING
- Publication number 20060188343
- Publication date Aug 24, 2006
- BJ Services Company
- Douglas B. Bell
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Application
Method and apparatus for through rotary sub-sea pile-driving
- Publication number 20050006105
- Publication date Jan 13, 2005
- Douglas B Bell
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING