Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5728427 | Process for producing color cards | Matthias Anthonie Johannes Akkerman | 1998-03-17 |
| 4830902 | Paper object printed with ink and coated with a protective layer | Tjalling M. Plantenga | 1989-05-16 |