Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6642820 | Protective switch | Koji Asakawa, Katsunori Kuboyama, Hisao Kawata | 2003-11-04 |
| 6577215 | Instantaneous-tripping circuit breaker | Koji Nomura, Katsunori Kuboyama, Koji Asakawa, Isamu Nagahiro | 2003-06-10 |