Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6563068 | Dome-shaped contact plate giving crispy feeling of click and sheet with contact plate | Takeo Yamagata | 2003-05-13 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6563068 | Dome-shaped contact plate giving crispy feeling of click and sheet with contact plate | Takeo Yamagata | 2003-05-13 |