Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6269874 | Electro-hydraulic surface controlled subsurface safety valve actuator | Michael S. Rawson, Charles M. Tompkins | 2001-08-07 |
| 6253843 | Electric safety valve actuator | Michael S. Rawson | 2001-07-03 |
| 5984260 | Electrically driven actuator with failsafe feature | Michael S. Rawson, Charles M. Tompkins | 1999-11-16 |
| 5918858 | Undulating transverse interface for curved flapper seal | Michael S. Rawson, Mark S. Megill, Clifford H. Beall | 1999-07-06 |
| 5682921 | Undulating transverse interface for curved flapper seal | Michael S. Rawson, Mark S. Megill, Clifford H. Beall | 1997-11-04 |