Issued Patents All Time
Showing 1–15 of 15 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5440539 | Method of controlling an electrical switching device in response to a signal configuration of a switching signal | — | 1995-08-08 |
| 5426420 | Method for alternate circuiting of data stream | — | 1995-06-20 |
| 5414695 | Method for monitoring existing telephone connections, particularly permanently switched telephone connections | Bernhard Gloess | 1995-05-09 |
| 5404449 | Interface module for supporting communication between processor systems | Juergen Weber, Gerd Boecker | 1995-04-04 |
| 5210755 | Circuit arrangement for clock regeneration in clock-controlled information processing systems | Lothar Schmidt | 1993-05-11 |
| 5146474 | Circuit arrangement for the routine testing of an interface between line terminator groups and the switching matrix network of a PCM telecommunication switching system | Rudolf Krumenacker | 1992-09-08 |
| 5146453 | Circuit configuration for clock-controlled time division multiplex telecommunications switching installations | Fritz Hlawa, Lothar Schmidt | 1992-09-08 |
| 5138608 | Circuit arrangement for testing parts of a digital time-division telecommunication switching center, particularly a telephone switching center | Walter Kucera, Eckard Tiwald | 1992-08-11 |
| 5099498 | Method for suppressing quantization noises superimposed on a sinusoidal audible tone transmitted in a digital telecommunications exchange system | Hans-Werner Rudolf, Monika Stadler | 1992-03-24 |
| 5081666 | Method for measuring the bit error rate in the transmission of digital information | Emil-Franz Blaschek, Eckard Tiwald | 1992-01-14 |
| 5079761 | Circuit arrangement for a centrally-controlled, time-division multiplex telephone switching system having a central switching matrix network and decentralized terminal groups | Rudolf Krumenacker, Rostislav Kaderka | 1992-01-07 |
| 5043978 | Circuit arrangement for telecommunications exchanges | Fritz Hlawa, Lothar Schmidt | 1991-08-27 |
| 5014264 | Circuit configuration for telecommunication switching systems, in particular PCM time division multiplex telephone switching systems with a central switching network and peripheral sub-switching networks connected to it | Ludwig Schoenauer | 1991-05-07 |
| 4605824 | Circuit arrangement for telecommunication exchange systems, particularly telephone exchange systems with switch facilities for emitting signals | Josef Birlmeier, Klaus Eberlein | 1986-08-12 |
| 4562308 | Subscriber connection circuit comprising feed resistors which can be bridged in low-ohmic fashion and an indication circuit which effects different indications | Horst Kopetzky, Walter Ossler | 1985-12-31 |