Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5617921 | Over-pressured well fracturing with surface reservoir and actuator system | Joseph H. Schmidt, Keith R. Ferguson, Roger Keese | 1997-04-08 |
| 5607015 | Method and apparatus for installing acoustic sensors in a wellbore | Frank E. Bergren, Curtis G. Blount, Robert J. Withers | 1997-03-04 |