Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4808223 | Silver/metal oxide material for electrical contacts and method of producing the same | Hisaji Shinohara, Hironobu Yamamoto, Takashi Nara, Hajime Yoshida | 1989-02-28 |
| 4574170 | Multi-polar circuit breaker | Ken-ichi Abe | 1986-03-04 |