Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8612144 | Method for operating a navigation device and a corresponding navigation device | Heinz-Werner Pfeiffer, Ralf Duckeck, Kishore Krishnan | 2013-12-17 |
| 6529869 | Process and electric appliance for optimizing acoustic signal reception | Joachim Wietzke | 2003-03-04 |