Ruhle; James L.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Ruhle; James L..The latest application filed is for "method and apparatus for core-sampling subsurface rock formations".
- Ruhle; James L. - Fullerton CA
| Patent | Date |
|---|---|
| Method and apparatus for core-sampling subsurface rock formations Grant 5,301,759 - Ruhle April 12, 1 | 1994-04-12 |
| Method and apparatus for coring rock Grant 4,679,636 - Ruhle July 14, 1 | 1987-07-14 |
| Threadless nonrotating steel coupling system Grant 4,616,855 - Ruhle October 14, 1 | 1986-10-14 |
| Apparatus for excavating bore holes in rock Grant 4,613,003 - Ruhle September 23, 1 | 1986-09-23 |
| Free-floating neutrally-buoyant reciprocating pump valve for abrasive fluids Grant 4,566,485 - Ruhle January 28, 1 | 1986-01-28 |
| Anti back-out steel coupling system for nonmetallic composite pipe Grant 4,548,428 - Ruhle October 22, 1 | 1985-10-22 |
| Method Of Drilling Oil Wells Grant 3,692,125 - Ruhle September 19, 1 | 1972-09-19 |
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