Issued Patents 2004
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6753659 | Operating device for discharge lamps having a preheating device | Olaf Busse, Bernhard Schemmel | 2004-06-22 |
| 6741040 | Operating device for lamps with a regulated SEPIC converter | — | 2004-05-25 |
| 6690122 | Lamp ballast with SEPIC converter | — | 2004-02-10 |