Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4845711 | Multiplexing and demultiplexing method and equipments measuring transmission quality and locating operation faults on multiplexed digital channels | Marc Liger, Jean G. Walraet, Patrick E. Boutmy | 1989-07-04 |