Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5342989 | Planar wave transducer assembly | — | 1994-08-30 |
| 5212336 | Planar wave transducer assembly | — | 1993-05-18 |
| 4837836 | Microphone pickup system | — | 1989-06-06 |
| 4491051 | String instrument pickup system | — | 1985-01-01 |
| D256463 | Speaker or similar article | John F. Berry | 1980-08-19 |
| 4204096 | Sonic transducer mounting | John F. Berry | 1980-05-20 |