Issued Patents 1982
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4357498 | Coaxial type multi-way planar diaphragm loudspeaker system | Yukio Tsuchiya | 1982-11-02 |
| 4334127 | Magnetic circuit for planar diaphragm type loudspeaker | Yukio Tsuchiya | 1982-06-08 |
| 4328400 | Coaxial multi-way planar diaphragm type loudspeaker system | Yukio Tsuchiya | 1982-05-04 |
| 4323737 | Driver unit for planar diaphragm type loudspeaker | Yukio Tsuchiya | 1982-04-06 |
| 4322584 | Voice coil bobbin for planar diaphragm | Yukio Tsuchiya | 1982-03-30 |