Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4489437 | Speech synthesizer | Yasuo Kusumoto, Sumio Fujita, Shuji Kawamura | 1984-12-18 |
| 4209972 | Digital electronic timepiece having an alarm display | — | 1980-07-01 |
| 4205517 | Alarm electronic timepiece | Fumikazu Murakami | 1980-06-03 |