Issued Patents 2005
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6954293 | Data carrier having an optically variable element and methods for producing it | Christoph Heckenkamp, Gerhard Stenzel | 2005-10-11 |
| 6874414 | Method and apparatus for screen printing | — | 2005-04-05 |
| 6840721 | Process for producing dies | Karlheinz Mayer | 2005-01-11 |