Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4493560 | Acoustic alarm device for watches | Hideo Hatanaka, Motoyuki Saito | 1985-01-15 |
| 4482257 | Acoustic alarm device for watches | Hideo Hatanaka, Motoyuki Saito | 1984-11-13 |
| 4417113 | Structure of push-button device | Motoyuki Saito | 1983-11-22 |
| 4351041 | Acoustic alarm device for watches | Hideo Hatanaka, Motoyuki Saito | 1982-09-21 |
| 4206590 | Electronic wristwatch case | Yasuo Maekawa | 1980-06-10 |