| 11725761 |
Sealing device for flanges |
— |
2023-08-15 |
| 11125364 |
Sealing device for flanges |
— |
2021-09-21 |
| 10066446 |
Tapered spline connection for drill pipe, casing, and tubing |
William James Hughes, Bryan Lane |
2018-09-04 |
| 9845645 |
Tapered spline connection for drill pipe, casing, and tubing |
William James Hughes, Bryan Lane |
2017-12-19 |
| 8751294 |
Processing value-ascertainable items |
Ashmit Bhattacharya, Bruce Bower, Marc Gendron, Steve Grove, Tina Henson +1 more |
2014-06-10 |
| 8739861 |
Electrical wiring for drill pipe, casing, and tubing |
William James Hughes, Bryan Lane |
2014-06-03 |
| 7373995 |
Method and apparatus for drilling curved boreholes |
William James Hughes |
2008-05-20 |
| 6540234 |
Gaskets |
Alan W. Atkinson, Stephen Peter Bond, John Hoyes, Stephen Alexander Schultze, Kevin Richard Holmes +1 more |
2003-04-01 |
| 5094304 |
Double bend positive positioning directional drilling system |
— |
1992-03-10 |