Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6426627 | Vacuum switch including vacuum-measurement devices, switchgear using the vacuum switch, and operation method thereof | Shuuichi Kikukawa, Katsunori Kojima, Ayumu Morita, Masashige Tsuji | 2002-07-30 |
| 6335502 | Vacuum switch and vacuum switch gear using the vacuum switch | Shuichi Kikukawa, Minoru Kanoi, Makoto Tazawa, Takuya Miyo | 2002-01-01 |