Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4630247 | Vibrator thermal-stress differential compensator | — | 1986-12-16 |
| 4496015 | Interchangeable drive means for a vehicle | James A. Porter, Joe D. Shivers, Otis A. Johnston | 1985-01-29 |
| T104801 | Vibrator mass actuator design | — | 1984-11-06 |
| 4442755 | Power stage servo valve for a seismic vibrator | — | 1984-04-17 |