Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6394499 | Self-adhesive stamp construction | David P. Hanefeld, Max A. DeHerrera, James A. Helzer, Alan Green, Vance P. Mattison | 2002-05-28 |
| 6132829 | Articles useful security printing and methods of making the same | William R. Kennerly, Gordon Morison, Kathy Alpaugh | 2000-10-17 |