Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5703439 | Lamp power supply circuit with electronic feedback circuit for switch control | — | 1997-12-30 |
| 5592054 | Fluorescent lamp ballast with selectable power levels | Edward E. Hammer, Maria Sanchez | 1997-01-07 |