Issued Patents 2011
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7884503 | Method and arrangement for harmonic-wave suppression for AC voltage-operated PTC heaters | Joerg Engelhardt | 2011-02-08 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7884503 | Method and arrangement for harmonic-wave suppression for AC voltage-operated PTC heaters | Joerg Engelhardt | 2011-02-08 |