Issued Patents 1989
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4885522 | Constant current source and battery charger | — | 1989-12-05 |
| 4862013 | Constant current source and battery charger | — | 1989-08-29 |
| 4856078 | DC fan speed control | — | 1989-08-08 |
| 4829259 | Constant current source and battery charger | — | 1989-05-09 |
| 4805083 | Low cost automatic voltage doubler switch | — | 1989-02-14 |