Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4578730 | High-voltage DC circuit breaker apparatus | Shunji Tokuyama, Kunio Hirasawa, Yoshio Yoshioka, Keiji Arimatsu | 1986-03-25 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4578730 | High-voltage DC circuit breaker apparatus | Shunji Tokuyama, Kunio Hirasawa, Yoshio Yoshioka, Keiji Arimatsu | 1986-03-25 |