Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5027113 | Process for simultaneously checking the authenticity of information media and the authenticity of the information itself | Renaud MARCHAND | 1991-06-25 |
| 4817170 | Process and device for the transmission of coded information | — | 1989-03-28 |
| 4774513 | Process for controlling the use of documents and documents and means for implementing this process | Jean-Marie Grafeille | 1988-09-27 |