Issued Patents 2005
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6934531 | Method for improving the security of authentication procedures in digital mobile radio telephone systems | Jörg Thelen | 2005-08-23 |
| 6917798 | Method for the real-time billing of telecommunication links when a subscriber is located outside his home network | Jörg Thelen | 2005-07-12 |