Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5189270 | Contact structure for vacuum circuit breaker | Kouji Suzuki, Shunkichi Endo, Yukio Kurosawa | 1993-02-23 |
| 4704506 | Vacuum interrupter | Yukio Kurosawa, Kiyoji Iwashita, Takanao Kurasawa, Syunkichi Endo | 1987-11-03 |