Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7439459 | Switch device and steering switch apparatus equipped with the switch device | Mikio Shirakawa, Tatsuya Yokoyama | 2008-10-21 |
| 7381912 | Switch device and steering switch device using the same | Mikio Shirakawa, Tatsuya Yokoyama | 2008-06-03 |