Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4627739 | Bracelet type wrist watch | Ichikawa Shingo, Hayao Kano, Koji Kudo | 1986-12-09 |
| 4328570 | Electronic timepiece with illumination lamp battery voltage drop compensation circuit | — | 1982-05-04 |
| 4223524 | Quartz oscillation circuit for electronic timepieces | — | 1980-09-23 |