Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6034341 | Circuit breaker | Junichi Sonoda, Yoshihiro Umemoto | 2000-03-07 |
| 5837950 | Drawer type circuit breaker with drawer contacts biased against contact arcuate portions and external connection terminals | — | 1998-11-17 |
| 5325744 | Wrench having wrench sleeves reversible upside down | — | 1994-07-05 |
| 4388506 | Circuit interrupter | Wasaburo Murai | 1983-06-14 |