Issued Patents 2011
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7920683 | Method and testing device for verifying the charge invoicing for a communications connection according to time-unit intervals | Monika Schmidt | 2011-04-05 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7920683 | Method and testing device for verifying the charge invoicing for a communications connection according to time-unit intervals | Monika Schmidt | 2011-04-05 |