Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9528356 | Flow control mechanism for downhole tool | Christopher Dale Russo, David J. Tilley | 2016-12-27 |
| 4678044 | Tubing pressure operated initiator for perforating in a well borehole | Robert R. Luke, James M. Barker, Michael Lee Smith, Larry Grigar | 1987-07-07 |
| 4629001 | Tubing pressure operated initiator for perforating in a well borehole | Robert R. Luke, Michael Lee Smith, Larry Grigar | 1986-12-16 |
| 4574892 | Tubing conveyed perforating gun electrical detonator | Larry Grigar | 1986-03-11 |
| 4467172 | Method and apparatus for laser engraving diamonds with permanent identification markings | Jerry Ehrenwald | 1984-08-21 |