Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7702086 | Method for verifying access authorization for voice telephony in a fixed network line or mobile telephone line as well as a communications network | Stefan Brock | 2010-04-20 |
| 7035386 | Method for verifying access authorization for voice telephony in a fixed network line or mobile telephone line as well as a communications network | Stefan Brock | 2006-04-25 |