Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6341661 | Bow dome sonar | Ernest T. Bick, Scott Hudson | 2002-01-29 |
| 5309410 | Tuned circuit for sonar beam pattern optimization | Elmore Kittower, Robert T. Winnicki | 1994-05-03 |
| 4764907 | Underwater transducer | David K. Dahlstrom, Charles R. Judy | 1988-08-16 |
| 4709361 | Flexural disk transducer | David K. Dahlstrom, Charles R. Judy | 1987-11-24 |
| 4225951 | Fish counter with scanning transducer | Albert S. Menin | 1980-09-30 |