Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5301759 | Method and apparatus for core-sampling subsurface rock formations | — | 1994-04-12 |
| 4825963 | High-pressure waterjet/abrasive particle-jet coring method and apparatus | — | 1989-05-02 |
| 4679636 | Method and apparatus for coring rock | — | 1987-07-14 |
| 4661052 | Reciprocating down-hole sand pump | — | 1987-04-28 |
| 4616855 | Threadless nonrotating steel coupling system | — | 1986-10-14 |
| 4613003 | Apparatus for excavating bore holes in rock | — | 1986-09-23 |
| 4566485 | Free-floating neutrally-buoyant reciprocating pump valve for abrasive fluids | — | 1986-01-28 |
| 4548428 | Anti back-out steel coupling system for nonmetallic composite pipe | — | 1985-10-22 |