Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6049177 | Single fluorescent lamp ballast for simultaneous operation of different lamps in series or parallel | — | 2000-04-11 |
| 5434478 | Electronic ballast for transilluminators and crosslinkers | Alvin Kovalsky, Thomas A. Almquist, Ronald E. Repass | 1995-07-18 |
| 5422545 | Closed loop feedback control circuits for gas discharge lamps | Francis H. Gerhard | 1995-06-06 |
| 4253046 | Variable intensity control apparatus for operating a gas discharge lamp | Francis H. Gerhard | 1981-02-24 |
| 4230971 | Variable intensity control apparatus for operating a gas discharge lamp | Francis H. Gerhard | 1980-10-28 |