Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7347287 | Hydraulic timing device | — | 2008-03-25 |
| 7210710 | Drill stem connection | Joseph Stephen Williamson, Scott Granger | 2007-05-01 |
| 5584353 | Well jar accelerator with expansion chamber | Archie W. Peil, Wayne A. Kovar | 1996-12-17 |
| 5337840 | Improved mud motor system incorporating fluid bearings | Robert J. Champagne, Jr. | 1994-08-16 |
| 5163513 | Circle threadform for marine riser top joint | — | 1992-11-17 |
| 4439167 | Shock absorber assembly | Thomas R. Bishop, Archie W. Peil, Wayne A. Kovar | 1984-03-27 |
| 4387885 | Shock absorber assembly for absorbing shocks encountered by a drill string | Thomas R. Bishop, Wayne A. Kovar | 1983-06-14 |