Issued Patents 2004
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6780564 | Methods and apparatus for rendering an optically encoded medium unreadable and tamper-resistant | Nabil Lawandy, Charles M. Zepp, Marianne Krieg-Kowald | 2004-08-24 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6780564 | Methods and apparatus for rendering an optically encoded medium unreadable and tamper-resistant | Nabil Lawandy, Charles M. Zepp, Marianne Krieg-Kowald | 2004-08-24 |