Issued Patents 1994
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5321682 | Method of and device for recording information on a record carrier having a recording layer which, when heated, undergoes an optically detectable change | Johannes H. M. Spruit, Bernardus A. J. Jacobs | 1994-06-14 |