Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4868804 | Optical memory system which uses a different illumination mode when scanning reserved areas | Francois Le Carvennec, Daniel Lecomte, Dominique Leterme | 1989-09-19 |
| 4858221 | Preformatted information medium and optical reader device | — | 1989-08-15 |