Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5214557 | D.C. vacuum circuit breaker for an electric motor vehicle | Mitsuyoshi Hasegawa, Takashi Tsuboi, Hiroyuki Akiyama, Tadashi Kamada | 1993-05-25 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5214557 | D.C. vacuum circuit breaker for an electric motor vehicle | Mitsuyoshi Hasegawa, Takashi Tsuboi, Hiroyuki Akiyama, Tadashi Kamada | 1993-05-25 |