Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6520067 | Hydraulic piston locking device | Preston Smith | 2003-02-18 |
| 6510895 | Energized sealing cartridge for annulus sealing between tubular well components | Bashir M. Koleilat, David Cain, Qiu Zheng | 2003-01-28 |