Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5018059 | Method and apparatus for telecommunications signal processing and switching | Gunther Kerschner, Herbert H. Hausmann, Giselher Eckel, Peter Friedrich | 1991-05-21 |
| 4823389 | Method and circuit apparatus for checking the authorization of access to a signal processing system | — | 1989-04-18 |