Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9269507 | Spring load adjustment structure of contact device and spring load adjustment method of contact device | Hideki Enomoto, Hirokazu Asakura, Tetsuya Yamada, Ritsu Yamamoto, Naoki Seki +2 more | 2016-02-23 |