Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5166982 | Horn speaker having a cooling device | — | 1992-11-24 |
| 4492827 | Horn speaker with reduced magnetic flux leakage | — | 1985-01-08 |
| D269417 | Siren | — | 1983-06-21 |
| 4385211 | Reflex horn speaker with a waterproofing device | — | 1983-05-24 |
| 4378471 | Horn speaker with linear grooves in a front surface of a pole piece of a yoke | — | 1983-03-29 |
| 4317009 | Coldproof reflex horn speaker | — | 1982-02-23 |
| 4241334 | Electric horn with twin driving electromagnets | — | 1980-12-23 |