Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5691686 | Transformer zero-phase current transformer | Masahiro Ishikawa, Osamu Hasegawa, Yasuhiko Ookubo | 1997-11-25 |
MM
Morio Machida
Overall (1997): #100,766 of 185,788Top 55%
1
Patents 1997