Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9972467 | Vacuum valve and manufacturing method for the same | Naoki Asari, Junichi Sato, Yuki Sekimori | 2018-05-15 |
| 6476338 | Vacuum switch | Kunio Yokokura, Iwao Ohshima | 2002-11-05 |