Issued Patents 2011
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8022637 | Method for detection of non-zero-voltage switching operation of a ballast of fluorescent lamps, and ballast | Martin Feldtkeller, Michael Herfurth | 2011-09-20 |
| 7894218 | Switch-mode converter | Martin Feldtkeller | 2011-02-22 |