Issued Patents 2002
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6343123 | Method of establishing a toll-free communication connection, as well as a service unit, an exchange and a communications network | Markus Lehmacher | 2002-01-29 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6343123 | Method of establishing a toll-free communication connection, as well as a service unit, an exchange and a communications network | Markus Lehmacher | 2002-01-29 |