Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4935889 | Multi-level display for small computer | Kouichi Harada | 1990-06-19 |
| 4864530 | Display system for a compact electronic apparatus | Koichi Hatta | 1989-09-05 |
| 4811257 | Electronic calculator having means for directly inputting variables into a prestored and displayed equation | Toshihiko Sumitani | 1989-03-07 |