Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6586695 | Electronic apparatus including keyboard with key switch device | Hirofumi Sato | 2003-07-01 |
| 6538641 | Key switch device, keyboard with the key switch device, and electronic apparatus with the keyboard | — | 2003-03-25 |