Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5414675 | Sonar system for detection of near bottom targets | — | 1995-05-09 |
| 4635240 | Sonar navigation system | Charles Wayne Allen | 1987-01-06 |
| 4439845 | Sonar system | Henry M. Gruen | 1984-03-27 |