Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4221111 | Electronic timepiece having a voltage conversion circuit | Singo Ichikawa | 1980-09-09 |
| 4206379 | Permanent magnet rotor assembly for electro-mechanical transducer | — | 1980-06-03 |