Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4806839 | Device for energizing a hermetic motor using inverter | Hiroshi Hujii, Osamu Matsumoto, Katsuhiko Saito | 1989-02-21 |
| 4802077 | PWM inverter controller | Hiroshi Fujii | 1989-01-31 |