Issued Patents 2004
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6798770 | Method for handling telephone calls via at least one telephone network using the internet | Frank Hollatz, Christian Marc Schmidt, Joachim Ungruh, Umesh Bhavsar, Andreas Lindenthal +1 more | 2004-09-28 |