Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5512722 | Key switch | Kumio Ozeki, Fumio Watanabe, Haruo Yoshida, Yosuke Sakai | 1996-04-30 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5512722 | Key switch | Kumio Ozeki, Fumio Watanabe, Haruo Yoshida, Yosuke Sakai | 1996-04-30 |