Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9714556 | Shear seal check valve for use in wellbore fluid | Shawn A. Olsen | 2017-07-25 |
| 7258167 | Method and apparatus for storing energy and multiplying force to pressurize a downhole fluid sample | Michael Shammai, Francisco Sanchez | 2007-08-21 |