Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5157715 | Call status recognition in a broadband private automatic branch exchange | Oliver Fischer | 1992-10-20 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5157715 | Call status recognition in a broadband private automatic branch exchange | Oliver Fischer | 1992-10-20 |