Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4845697 | Method of time limited searching for a track address on an optically read information disc | — | 1989-07-04 |
| 4797752 | Information storage carrier and method for storing duplicate information | — | 1989-01-10 |
| 4796098 | Banded and interleaved video disc format with duplicate information stored at different disc locations | — | 1989-01-03 |