Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5258592 | Waterproof switch apparatus for electronic device | Kenichi Nishikawa, Takahiro Hayashi | 1993-11-02 |
| 5240792 | Battery holder for electronic apparatus | Takahiro Hayashi | 1993-08-31 |
| 4558396 | Display device for portable type electrical equipment | Susumu Otsuki | 1985-12-10 |