Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6506476 | Printed document having a value, with luminescent authenticity feature | Wittich Kaule, Gerhard Stenzel | 2003-01-14 |
| 6503603 | Printed document having a value and comprising a luminescent authenticity feature | Wittich Kaule, Gerhard Stenzel | 2003-01-07 |