Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5544226 | Private branch exchange having a central control unit and a mobile control unit subordinate thereto | Bernd Weis, Karl-Albert Turban, Manfred Schulz, Gerd Siegmund | 1996-08-06 |
| 5355402 | System for establishing a connection between private branch exchanges | Bernd Weis, Karl-Albert Turban, Manfred Schulz, Gerd Siegmund | 1994-10-11 |