Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6647107 | Multi-user answering system and method | — | 2003-11-11 |
| 6343325 | Method of establishing a connection, as well as an exchange and a service control point | Lothar Krank, Uwe Stahl | 2002-01-29 |
| 6321084 | Method for setting up a telecommunication link to persons in closed facilities, such as passenger transport means, as well as a telecommunication system and network | — | 2001-11-20 |
| 6163605 | Service unit for supporting the establishment of calls, as well as switching center, service control point, communications network, and method of establishing a call | Uwe Stahl, Wolfgang Lautenschlager | 2000-12-19 |