Issued Patents 2021
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11087934 | Arc-quenching device for direct current switch | Koji Omori, Hiroyuki Otsuka | 2021-08-10 |
| 10964493 | Arc-quenching device for direct current switch | Koji Omori, Hiroyuki Otsuka | 2021-03-30 |