Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4874214 | Clear holographic helmet visor and process of producing same | Francoise Cheysson | 1989-10-17 |
| 4830464 | Wide field high optical efficiency display device | Francoise Cheysson | 1989-05-16 |
| 4810056 | Collimated relief display device | Claude Maureau | 1989-03-07 |