Issued Patents 2002
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6430279 | Method for the acceptance of calling charges for individual calls as well as telephone network and terminal unit | Roland Sawatzki | 2002-08-06 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6430279 | Method for the acceptance of calling charges for individual calls as well as telephone network and terminal unit | Roland Sawatzki | 2002-08-06 |