Issued Patents 2002
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6494272 | Drilling system utilizing eccentric adjustable diameter blade stabilizer and winged reamer | Jay M. Eppink, David E. Rios-Aleman | 2002-12-17 |
| 6488104 | Directional drilling assembly and method | Jay M. Eppink, David E. Rios-Aleman | 2002-12-03 |
| 6349763 | Electrical surface activated downhole circulating sub | James W. Estep, Harold D. Johnson | 2002-02-26 |