Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6179338 | Compound film for an identity card with a humanly visible authenticity feature | Matthias Bergmann, Reinhard Krusche, Joseph Riedl | 2001-01-30 |
| 5944356 | Identity card with a humanly visible authenticity feature | Matthias Bergmann, Reinhard Krusche, Joseph Riedl | 1999-08-31 |