Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5270985 | Seismic pulse generation | Keith M. Thomas, Michael R. Dongworth | 1993-12-14 |
| 5091891 | Seismic pulse generation | Keith M. Thomas, Michael R. Dongworth | 1992-02-25 |
| 4667766 | Seismic pulse generator | — | 1987-05-26 |