Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4724532 | Vibrator response linearization circuit | Dean Perkins | 1988-02-09 |
| 4706231 | Reaction mass acceleration feedback device | Dean Perkins | 1987-11-10 |
| 4692912 | Automatic force control for a seismic vibrator | Dean Perkins, Rhys Michael Evans | 1987-09-08 |