Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8705220 | Surge arrester and gas-insulated electric apparatus | — | 2014-04-22 |
| 8199445 | Gas insulated circuit breaker system and gas insulated circuit breaker monitoring method | Shiro Maruyama, Takashi Nakajima, Hiroyuki Hayata, Kozo Matsushita, Hideo Ishizuka | 2012-06-12 |