Issued Patents 2003
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6588508 | Method and apparatus to reduce trapped pressure in a downhole tool | Robert A. Parrott, Haoming Li, Anthony P. Vovers, Cynthia L. Hickson, Harry B. Anderson | 2003-07-08 |