Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4862394 | Drop height recorder | David B. Thompson, Harvey L. Downing, Michael V. Allred | 1989-08-29 |
| 4227198 | Seismic triggered seismograph | Larry R. Cornelius | 1980-10-07 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4862394 | Drop height recorder | David B. Thompson, Harvey L. Downing, Michael V. Allred | 1989-08-29 |
| 4227198 | Seismic triggered seismograph | Larry R. Cornelius | 1980-10-07 |