Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5680382 | Optical information recording apparatus and method capable of handling a plurality of card-like recording media of different reflectance | — | 1997-10-21 |
| 5659745 | File management with erasure mode indicating logical erasure of files for an information recording medium | — | 1997-08-19 |