Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5149607 | Matrix | Matinus J. M. De Graaf | 1992-09-22 |
| 4448827 | Optically readable information disc comprising an envelope of cross-linked synthetic resin | Henricus G. J. A. M. Luijben | 1984-05-15 |