Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D304718 | Input/output device for electronic memo | Hiroshi Sakaguchi | 1989-11-21 |
| D304175 | Input/output terminal | Hiroshi Sakaguchi | 1989-10-24 |
| D303678 | Electronic calculator | Takahisa Yubisui, Hiroshi Sakaguchi | 1989-09-26 |
| D299700 | Electronic thermometer | Takahisa Yubisui, Hiroshi Sakaguchi | 1989-02-07 |