Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5689391 | Magneto-optic multitrack reading head having a plurality of reflective rays | — | 1997-11-18 |
| 5640285 | Information recording medium encoded to enable track following | Joseph Colineau, Charaf Hanna, Michel Sonrier | 1997-06-17 |