Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8766574 | Method and control device for operating a three-phase brushless direct current motor | Juergen Groth, Heiko Engelhardt | 2014-07-01 |
| 7867018 | Apparatus for accommodating and making electrical contact with a luminous means in a spotlight | Harald H. Krieg, Erwin Melzner, Kerstin Schlegel, Anton Hundhammer | 2011-01-11 |
| D568527 | Lamphead | Kerstin Schlegel, Erwin Melzner | 2008-05-06 |
| D563035 | Lamphead | Kerstin Schlegel, Erwin Melzner | 2008-02-26 |
| 7103498 | Method for determining the angular position of a rotor | — | 2006-09-05 |