Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5551520 | Dual redundant detonating system for oil well perforators | Robert K. Bethel, Michael Brian Grayson | 1996-09-03 |
| 5533454 | Alternating current activated firing circuit for EBW detonators | Alan Crawford | 1996-07-09 |
| 5479860 | Shaped-charge with simultaneous multi-point initiation of explosives | — | 1996-01-02 |
| 4388579 | Control system for a wound-rotor motor | — | 1983-06-14 |
| 4233554 | Vent actuated shorting switch | — | 1980-11-11 |