Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7170859 | Media converter with integrated local information transmission function and fault alarm signal transmission system | Naoshi Yamada, Fumio Yajima, Yoshiharu Unami, Katsuyuki Arai, Yasushi Nakamura | 2007-01-30 |