Issued Patents 2004
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6754320 | Process, exchange, charge computer, charge billing computer and program modules for the processing of charge data for telecommunications services | Detlef Daase, Irina Muller, Ferdinand Geisbüsch | 2004-06-22 |