Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6803904 | Keyboard input device to be reliably connected to portable device | Kazutoshi Watanabe, Takahiro Kawauchi | 2004-10-12 |
| 6714403 | Foldable keyboard input device | Kazutoshi Watanabe, Takahiro Kawauchi | 2004-03-30 |