Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4580259 | Switchboard control system | Hidemi Harada, Yoshiaki Matsuura, Kenzo Aoki, Atsuhisa Takahashi | 1986-04-01 |
| 4575839 | Centralized supervisory system | Yusuke Ogata, Yoshiaki Matsuura, Kenzou Aoki, Hidemi Harada | 1986-03-11 |