Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4853184 | Contact material for vacuum interrupter | Naya Eizo, Nagata Yoshikazu, Horiuchi Toshiaki, Okumura Mitsuhiro, Demizu Michinosuke +2 more | 1989-08-01 |
AM
Asakawa Masuo
Overall (1989): #34,163 of 140,708Top 25%
1
Patents 1989