Issued Patents 2004
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6831967 | Method for backing up call charge data of a telephone switching office | Herwig Kittl | 2004-12-14 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6831967 | Method for backing up call charge data of a telephone switching office | Herwig Kittl | 2004-12-14 |