Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7513433 | Security feature | — | 2009-04-07 |
| 7196781 | Method for verifying a perforation pattern serving as a security characteristic | — | 2007-03-27 |
| 6838639 | Method for the machining of workpieces by means of several laser beams | Ulrich Bielesch | 2005-01-04 |