Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7680498 | Method for reverse signalling for a transmission service which is to be used during a mobile terminated-PSTN/ISDN originated-call | Jens Hofmann, Norbert Klehn | 2010-03-16 |