Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7139378 | Method for signaling an incoming call | Holger Prange | 2006-11-21 |
| 6816484 | Circuit and method for switching through channels of a multi-channel connection | Dieter Gneiting | 2004-11-09 |
| 5600639 | Broadcast method for simultaneous switching of an announcement to a plurality of subscribers of a communication system | Klaus Leutner | 1997-02-04 |