Issued Patents 2003
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6530602 | Machine detectable document of value | Gerhard Stenzel | 2003-03-11 |
| 6506476 | Printed document having a value, with luminescent authenticity feature | Gerhard Schwenk, Gerhard Stenzel | 2003-01-14 |
| 6503603 | Printed document having a value and comprising a luminescent authenticity feature | Gerhard Schwenk, Gerhard Stenzel | 2003-01-07 |