Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5774423 | Acoustic sensor and array thereof | Richard E. Pearce | 1998-06-30 |
| 5341348 | Swivel mount for gimbal geophone | — | 1994-08-23 |
| 4632215 | Dual-mode hydraulic vibrator | — | 1986-12-30 |
| 4503929 | Sleeve valve for an air gun having a reciprocating shuttle valve | Mario Diaz | 1985-03-12 |
| 4324311 | Actuator for an air gun having a reciprocating shuttle valve | — | 1982-04-13 |
| 4216570 | Method of assembling a shock absorber employing a coil spring | William S. Butler | 1980-08-12 |
| 4185719 | Truck damping | William S. Butler | 1980-01-29 |