Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7044242 | Roller cone bits with reduced packing | Andrew J. Osborne, Jr. | 2006-05-16 |
| 6769500 | Optimized earth boring seal means | — | 2004-08-03 |
| 6725947 | Roller bits with bearing failure indication, and related methods, systems, and methods of manufacturing | Yuri A. Palaschenko | 2004-04-27 |
| 4662460 | Rotary drilling jar | James Bradley Loeb, Andrew J. Osborne, Jr. | 1987-05-05 |