Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10495767 | Multimode seismic survey system | Douglas B. Crice, Keith Elder | 2019-12-03 |
| 10156650 | Multimode seismic unit and associated methodology | Douglas B. Crice, Keith Elder | 2018-12-18 |
| 9594175 | Multimode seismic survey system | Douglas B. Crice, Keith Elder | 2017-03-14 |