Issued Patents All Time
Showing 26–27 of 27 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6764079 | Valve seal assembly with straight-walled retainer | Timothy A. Hegemier | 2004-07-20 |
| 4282750 | Process for measuring the formation water pressure within an oil layer in a dipping reservoir | Michael Prats | 1981-08-11 |