Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4459516 | Line operated fluorescent lamp inverter ballast | Francis J. Zelina | 1984-07-10 |
| 4424468 | Inverter ballast circuit with shoot through prevention, auto transformer coupling and overload prevention | Francis J. Zelina | 1984-01-03 |