Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4887158 | Sound and image transmission system | Jacques Guichard | 1989-12-12 |
| 4796087 | Process for coding by transformation for the transmission of picture signals | Jacques Guichard | 1989-01-03 |