Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5684786 | Record carrier having an information volume including audio information and an information volume including additional non-audio information | Erik C. Schylander, Jos G. Schepers, Gerrit D. Westerhout | 1997-11-04 |