Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4748389 | Motor speed control apparatus | — | 1988-05-31 |
| 4234917 | Commutation failure detection and restoration for SCR frequency converters | Yoshiaki Suzuki, Takumi Mizukawa, Yoshio Ogino | 1980-11-18 |