Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D317458 | Electronic calculator with solar cell | Masaji Sawada | 1991-06-11 |
| D309152 | Electronic calculator with printer | Hiroshi Sakaguchi | 1990-07-10 |
| D299812 | Electronic thermometer | Hiroshi Sakaguchi | 1989-02-14 |