Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4851622 | Puffer type gas-blast circuit breaker | Takashi Yonezawa | 1989-07-25 |
MH
Mamoru Hosomi
Overall (1989): #81,101 of 140,708Top 60%
1
Patents 1989