Issued Patents All Time
Showing 1–3 of 3 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 | Michael Eder, Siegmar Riedel, Burkhard Zittinger | 2003-06-10 |
| 5600639 | Broadcast method for simultaneous switching of an announcement to a plurality of subscribers of a communication system | Axel Kreten | 1997-02-04 |
| 4802205 | Circuit arrangement for telecommunications switching systems, particularly for telephone switching systems comprising information-processing sequential logic systems and traffic measuring devices | Michael Eder, Siegfried Pohl | 1989-01-31 |