Issued Patents 1989
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4889183 | Method and apparatus for retaining shaped charges | Kenneth C. Sommers, Kevin R. George | 1989-12-26 |
| 4836109 | Control line differential firing head | Kevin R. George | 1989-06-06 |
| 4817710 | Apparatus for absorbing shock | A. Glen Edwards, Emmet F. Brieger | 1989-04-04 |
| 4804044 | Perforating gun firing tool and method of operation | Michael E. McMahan, Flint R. George | 1989-02-14 |
| 4800958 | Annulus pressure operated vent assembly | David M. Haugen, Robert R. Luke, Kevin R. George | 1989-01-31 |