Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4580235 | Electronic calculator with check function | — | 1986-04-01 |
| 4455024 | Electronic game apparatus | — | 1984-06-19 |
| 4336598 | Electronic calculator with musical note generation | — | 1982-06-22 |
| 4274146 | Calendar data display device for an electronic device | — | 1981-06-16 |
| 4181963 | Electronic calculator with time counting function | — | 1980-01-01 |