Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5403543 | Process for manufacturing a contact material for vacuum circuit breakers | Tsutomu Okutomi, Tsuneyo Seki, Atsushi Yamamoto, Mikio Okawa, Tadaaki Sekiguchi | 1995-04-04 |