Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5943320 | Method of charging for the use of a telecommunications service, as well as a switching system, a service control point, and a network management facility | Hartmut Weik, Uwe Stahl, Wolfgang Lautenschlager, Lothar Krank | 1999-08-24 |