Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4853835 | Protective apparatus for inverter | — | 1989-08-01 |
| 4853836 | Snubber energy regenerating circuit | — | 1989-08-01 |
| 4797801 | Plural polyphase inverter units having toned input filters | Yoshio Kamei | 1989-01-10 |