Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4860344 | Circuit arrangement for telecommunications switching systems, particularly telephone switching systems, etc. | Klaus Brandmaier, Siegfried Pohl | 1989-08-22 |
| 4811014 | Circuit arrangement for telecommunications systems, particularly telephone switching systems, comprising information interrogating devices cyclically driving inquiry locations | — | 1989-03-07 |
| 4785298 | Circuit arrangement for telecommunications systems, particularly telephone switching systems, comprising an information interrogating device which cyclically drives inquiry locations | — | 1988-11-15 |
| 4649234 | Circuit arrangement for telecommunications exchange systems, particularly telephone exchange systems, comprising information processing sequential logic systems and traffic measuring devices | — | 1987-03-10 |