Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6993320 | Method and device for accessing a telecommunications network and for billing telecommunication services | Peter Brune, Ulrike Feuser, Michael Langer, Patrik Ljungström, Uwe Michel +1 more | 2006-01-31 |