Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4670863 | Vibrator seismic source having adaptive distortion limiting control system | John J. Sallas | 1987-06-02 |
| 4616352 | Vibrator seismic source having distortion limiting control system | John J. Sallas, Haroon I. Alvi, John Scott Shoffner, Cameron B. Wason | 1986-10-07 |