Issued Patents All Time
Showing 26–35 of 35 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4468651 | Method for eliminating the zero point error in an iterative analog-digital converter | Frithjof von Sichart, Peter Picard | 1984-08-28 |
| 4415881 | Digital-to-analog converter | Klaus Wintzer | 1983-11-15 |
| 4378472 | Two to four wire hybrid circuit arrangement for a pulse code modulated time multiplex telecommunication system | — | 1983-03-29 |
| 4336424 | Circuit arrangement for monitoring operating conditions of direct current devices | — | 1982-06-22 |
| 4327253 | Circuit arrangement for consecutively monitoring operating conditions of direct current devices | — | 1982-04-27 |
| 4320260 | Circuit arrangement for determining the connection condition of a subscriber line in a telecommunications network | — | 1982-03-16 |
| 4309766 | Arrangement for subscriber circuits utilizing digital time division multiplex telecommunication installations and particularly for PCM local exchanges | Hermann Monat | 1982-01-05 |
| 4301334 | Telecommunication subscriber line access circuit with ground key and insulation fault indication | — | 1981-11-17 |
| 4297531 | Circuit for suppressing noise influences in the evaluation of signal states on transmission lines | Axel Dalhof | 1981-10-27 |
| 4284853 | Telecommunication subscriber line access circuit with ground key indication and a device for call signal generation | — | 1981-08-18 |