Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6947538 | Process, service computer, switching centre, terminals and program modules for handling incoming telephone calls during and online data-network session blocking a subscriber line | Yuzhong Shen, Peter Piepkorn, Bernhard Kaiser, Harald Orlamunder | 2005-09-20 |