Sherman C. May

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San Francisco, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
Hydraulic drilling apparatus and method
- Patent number 4,852,668
- Issue date Aug 1, 1989
- Dickinson, III; Ben Wade Oakes
- Ben W. O. Dickinson
- E21 - EARTH DRILLING MINING
Information Patent Grant
Hydraulic drilling apparatus and method
- Patent number 4,790,394
- Issue date Dec 13, 1988
- Dickinson, III; Ben Wade Oakes
- Ben W. O. Dickinson
- E21 - EARTH DRILLING MINING
Information Patent Grant
Hydraulic drilling apparatus and method
- Patent number 4,787,465
- Issue date Nov 29, 1988
- Ben Wade Oakes Dickinson III et al.
- Ben W. O. Dickinson
- E21 - EARTH DRILLING MINING