Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7464763 | Method of injecting lift gas and gas lift flow control device | James W. Hall, Joseph L. Johnson, Gary Nettleship | 2008-12-16 |
| 6138752 | Method and apparatus to determine subterrranean formation stress | Ronald Marshall Bass | 2000-10-31 |