Issued Patents All Time
Showing 26–50 of 52 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7080700 | Tractor with improved valve system | Duane Bloom, Robert Levay | 2006-07-25 |
| 7080701 | Electrically sequenced tractor | Duane Bloom, Ronald E. Beaufort | 2006-07-25 |
| 7059417 | Puller-thruster downhole tool | Ronald E. Beaufort, Rudolph Ernst Krueger, V | 2006-06-13 |
| 7055631 | Drill pipe protector | Brian Mitchell, Andrew Dale Fuller | 2006-06-06 |
| 7048047 | Gripper assembly for downhole tools | Duane Bloom, Rudolph Ernst Krueger, V | 2006-05-23 |
| 6938708 | Electrically sequenced tractor | Duane Bloom, Ronald E. Beaufort | 2005-09-06 |
| 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 |
| 6640894 | Gripper assembly for downhole tools | Duane Bloom, Rudolph Ernst Krueger, V | 2003-11-04 |
| 6601652 | Puller-thruster downhole tool | Ronald E. Beaufort, Rudolph Ernst Krueger, V | 2003-08-05 |
| 6478097 | Electrically sequenced tractor | Duane Bloom, Ronald E. Beaufort | 2002-11-12 |
| 6464003 | Gripper assembly for downhole tractors | Duane Bloom, Rudolph Ernst Krueger, V | 2002-10-15 |
| 6431291 | Packerfoot with bladder assembly having reduced likelihood of bladder delamination | Phillip W. Mock | 2002-08-13 |
| 6427786 | Electro-hydraulically controlled tractor | Ronald E. Beaufort, Duane Bloom | 2002-08-06 |
| 6378633 | Drill pipe protector assembly | Andrew Dale Fuller | 2002-04-30 |
| 6347674 | Electrically sequenced tractor | Duane Bloom, Ronald E. Beaufort | 2002-02-19 |
| 6286592 | Puller-thruster downhole tool | Ronald E. Beaufort, Rudolph Ernst Krueger, V | 2001-09-11 |
| 6250405 | Drill pipe protector assembly | Andrew Dale Fuller | 2001-06-26 |
| 6241031 | Electro-hydraulically controlled tractor | Ronald E. Beaufort, Duane Bloom | 2001-06-05 |
| 6230813 | Method of moving a puller-thruster downhole tool | Ronald E. Beaufort, Rudolph Ernst Krueger, V | 2001-05-15 |
| 6003606 | Puller-thruster downhole tool | Ronald E. Beaufort, Rudolph Ernst Krueger, V | 1999-12-21 |
| 4865356 | Composite material tubular member joint | Joe P. Parris, Edmund A. Fisher | 1989-09-12 |