Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4851896 | Manual sweeping apparatus | Takashi Sato | 1989-07-25 |
| 4449123 | Dot matrix type multi-layer liquid crystal display device | — | 1984-05-15 |
| 4317183 | Unused program number indicating system for a small program type electronic calculator | Tomohiro Shimizu | 1982-02-23 |
| 4301511 | Programmable calculator with a device for controlling the reading of program data | Tomohiro Shimizu | 1981-11-17 |