Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4397015 | Apparatus for moving a tone arm | — | 1983-08-02 |
| 4347597 | Automatic tone arm returning device | — | 1982-08-31 |
| 4201390 | Semi-automatic record player | Hirosi Koyahata | 1980-05-06 |