Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6659351 | Electric effect-based security feature on security documents and on documents of value-proof process belonging thereto | Frank Kappe | 2003-12-09 |
| 6600416 | Device for validating authenticity features on documents of value and security documents | Frank Kappe, Benedikt Ahlers, Roland Gutmann, Arnim Franz-Burgholz | 2003-07-29 |