Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5151671 | Circuit breaker | Tomoyuki Sawada, Shinji Takayama, Youichi Aoyama, Yukihiro Matsuoka, Tatsuo Hiroshima | 1992-09-29 |
| 4743720 | Current limiting circuit interrupter | Akira Takeuchi, Hideo Hisamoto, Takanobu Tanaka, Yoichi Aoyama, Junichi Matsuda +1 more | 1988-05-10 |