Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4420826 | Stress relief for flextensional transducer | William J. Marshall | 1983-12-13 |
| 4409681 | Transducer | — | 1983-10-11 |
| 4384351 | Flextensional transducer | John A. Pagliarini, Jr. | 1983-05-17 |
| 4310904 | Ambient sea noise elimination method and apparatus | Samuel S. Ballard | 1982-01-12 |
| 4187490 | Range determining system | Samuel S. Ballard | 1980-02-05 |