Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4893309 | Digital interface between at least two subscriber line interface circuits and a processing unit | Robert Lechner, Hans-Werner Rudolf, Harald Stader, Norbert Wingerath, Christopher C. A. Priest +7 more | 1990-01-09 |
| 4881226 | Digital interface of an integrated subscriber line interface circuit | Robert Lechner, Hans-Werner Rudolf, Harald Stader, Norbert Wingerath, Christopher C. A. Priest +7 more | 1989-11-14 |
| 4435619 | Switching network interfacing telephone-exchange equipment with two-subscriber party line | Ennio Bonaparte | 1984-03-06 |