Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6807268 | Sequential calling system with prioritization of the last dialed telephone number | Matthias Krömer | 2004-10-19 |
| 6650891 | SMS-supported method for online/offline detection of user groups in mobile wireless networks | Robert Wiedemann | 2003-11-18 |