Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6771565 | Low voltage seismic sound source | John Murray Jopling, David Charles Holland, Richard Elliot Hale | 2004-08-03 |
| 4406491 | Mounting of airfoil members on land vehicles | — | 1983-09-27 |