Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5666398 | Switching equipment and method for radiotelephone system of the local or private branch exchange type | Reinhard Schiffel, Bruno Stadler, Holger Vogel, Andreas Hachenberger, Detlef Herold | 1997-09-09 |