Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6380693 | Apparatus for operating at least one light-emitting diode | — | 2002-04-30 |
| 5008596 | Fluorescent lamp high frequency operating circuit | Ulrich Roll | 1991-04-16 |
| 4853591 | Multiple-tube compact low-pressure discharge fluorescent lamp | Lutz Klein, Ernst Panofski | 1989-08-01 |