Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4694452 | Switching configuration for a telecommunications system in particular a PBX system with subscriber lines, trunk groups, and interface modules | Gunther Beckinger, Gerhard Egler | 1987-09-15 |
| 4309765 | Process for transmitting items of information between devices of an indirectly controlled exchange system, in particular a telephone exchange system | Helmut Mueller, Hans P. von Ow, Bernhard Werres | 1982-01-05 |