Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4786899 | Circuit arrangement for PCM telecommunication facilities | Wolfgang Berner, Rolf Grabenhorst, Peter Kueffer, Gerhard Prey | 1988-11-22 |
| 4605824 | Circuit arrangement for telecommunication exchange systems, particularly telephone exchange systems with switch facilities for emitting signals | Klaus Eberlein, Werner Nagler | 1986-08-12 |