Issued Patents All Time
Showing 26–27 of 27 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4864286 | Switch operation monitoring apparatus | Youichi Ohshita, Akira Hashimoto, Masanori Tsukushi, Yukio Kurosawa | 1989-09-05 |
| 4747015 | Gas insulated switching apparatus | Kazuaki Oishi, Masahira Sakurai | 1988-05-24 |