Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4972400 | Optical pickup apparatus having switch for allowing positional adjustment | Toru Kuwabara, Kazuo Hirasawa | 1990-11-20 |
| 4366441 | Signal-muting circuit for bridge amplifier | — | 1982-12-28 |