Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6806704 | Devices and methods for investigating the magnetic properties of objects | Ulrich Schanda | 2004-10-19 |
| 6726813 | Security device and method for producing it | Wittich Kaule, Gregor Grauvogl, Friedrich Kretschmar | 2004-04-27 |