Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4497976 | Method for emitting additional information in conjunction with message signals to be transmitted over a data switching center | Dietmar Franz | 1985-02-05 |
| 4451697 | Method for establishing connections between subscriber stations which operate with different transmission procedures by way of signal converters including busy-free control | Dietmar Franz | 1984-05-29 |
| 4430525 | Circuit arrangement for connecting telex subscriber stations to teletex subscriber stations which are connected to the same data exchange system | Dietmar Franz | 1984-02-07 |