Issued Patents 2004
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6758279 | Puller-thruster downhole tool | Ronald E. Beaufort, Rudolph Ernst Krueger, V | 2004-07-06 |
| 6745854 | Electrically sequenced tractor | Duane Bloom, Ronald E. Beaufort | 2004-06-08 |
| 6739415 | Drill pipe protector | Brian Mitchell, Andrew Dale Fuller | 2004-05-25 |
| 6715559 | Gripper assembly for downhole tractors | Duane Bloom | 2004-04-06 |
| 6679341 | Tractor with improved valve system | Duane Bloom, Robert Levay | 2004-01-20 |