Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5698008 | Contact material for vacuum valve and method of manufacturing the same | Tsuneyo Seki, Tsutomu Okutomi, Atsushi Yamamoto | 1997-12-16 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5698008 | Contact material for vacuum valve and method of manufacturing the same | Tsuneyo Seki, Tsutomu Okutomi, Atsushi Yamamoto | 1997-12-16 |