Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4560833 | Method and apparatus for signaling an existing telephone communication between picture telephone apparatuses | Jens Weber | 1985-12-24 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4560833 | Method and apparatus for signaling an existing telephone communication between picture telephone apparatuses | Jens Weber | 1985-12-24 |