Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6255986 | Calibration method and arrangement | Thomas Alberty, Volker Hespelt, Franz-Josef Hagmanns | 2001-07-03 |
| 4545048 | Service integrated digital transmission system | Klaus Krull, Manfred Welzenbach | 1985-10-01 |