Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6780564 | Methods and apparatus for rendering an optically encoded medium unreadable and tamper-resistant | Nabil Lawandy, Andrei Smuk, Marianne Krieg-Kowald | 2004-08-24 |
| 6709802 | Methods and apparatus for rendering an optically encoded medium unreadable | Nabil Lawandy, Kenneth S. Norland | 2004-03-23 |