Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4975673 | Circuit breaker apparatus including trip display mechanism | Yoji Ikehata, Kenichi Takahashi | 1990-12-04 |
| 4916422 | Apparatus for electrically operating a circuit breaker | Yoji Ikehata | 1990-04-10 |