Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4853907 | Inclinable vibratory seismic source | — | 1989-08-01 |
| 4842094 | Rotatable horizontal vibrator | Howard A. Willis, Jose P. Munoz | 1989-06-27 |
| 4802787 | Electrical control system | — | 1989-02-07 |