Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4379211 | Arcuately tensioned piezoelectric diaphragm microphone | Edwin Joscelyn, Michael J. Ferrante | 1983-04-05 |
| 4346501 | Headset cable strain relief clamp | — | 1982-08-31 |
| 4306121 | Electro-acoustic transducer assembly | Edwin Joscelyn | 1981-12-15 |