Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5293568 | Track-address judging method | Kazutake Sugawara | 1994-03-08 |
| 5285433 | Apparatus with position detecting means for recording and/or reproducing data on and/or from optical card | Toshio Horiguchi | 1994-02-08 |