Issued Patents 2003
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6577710 | Method for checking a switching center, line unit and switching center for implementing the method, as well as an appertaining computer program | Klaus Leutner, Siegmar Riedel, Burkhard Zittinger | 2003-06-10 |