Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE30588 | Electric timepiece for displaying the operating condition thereof | Munetaka Tamaru, Kazunari Kume, Minoru Watanabe, Hideo Sato, Shigeru Morokawa | 1981-04-21 |
| 4232510 | Timepiece | Munetaka Tamaru, Akira Tsuzuki, Shigeru Morokawa, Minoru Watanabe, Kazunari Kume | 1980-11-11 |
| 4209970 | Electronic timepiece | Kazunari Kume, Minoru Watanabe, Munetaka Tamaru | 1980-07-01 |