Issued Patents 2011
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8077364 | Security system, particularly for valuable documents | Gunther Dausmann, Benedikt Ahlers, Arnim Franz-Burgholz | 2011-12-13 |
| 8059320 | Method for production of documents with a hologram and a document with a hologram | Gunther Dausmann | 2011-11-15 |