Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8004217 | Electronic ballast with integral shutdown timer | George W. Mortimer | 2011-08-23 |
| 4847535 | Hybrid ballast for multiple discharge lamps | Joseph S. Droho | 1989-07-11 |
| 4593231 | Three-way fluorescent lamp device | Joseph S. Droho | 1986-06-03 |
| 4568860 | Rapid start fluorescent lamp circuits with disconnect sockets | Albert E. Feinberg | 1986-02-04 |
| 4406976 | Discharge lamp ballast circuit | Joseph S. Droho | 1983-09-27 |
| 4206385 | Ballast de-energizing circuit for high pressure metal vapor lamp system | — | 1980-06-03 |