Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5267223 | Electroacoustic transducer seal | Peter F. Flanagan | 1993-11-30 |
| 5220535 | Sonar baffles | Peter F. Flanagan | 1993-06-15 |
| 4435794 | Wall-driven oval ring transducer | William J. Marshall | 1984-03-06 |