Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4868551 | Sensitive display device comprising a scanned screen | Claude Puech | 1989-09-19 |
| 4842409 | Monomode optical fiber ring interferometric device with semiconductor diode as light energy emission reception/amplification means | Herve Lefevre | 1989-06-27 |