Issued Patents 2002
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6491223 | Autodiscriminating optical reader | Andrew Longacre, Jr., Thomas J. Koziol, Michael A. Ehrhart | 2002-12-10 |
| 6419157 | Methods for processing security documents | Michael A. Ehrhart, Todd A. Dueker, Cayetano Sanchez, III, Walter Szrek, John C. Abraitis +4 more | 2002-07-16 |
| 6405929 | Material detection systems for security documents | Michael A. Ehrhart, Todd A. Dueker, Cayetano Sanchez III, Walter Szrek, John C. Abraitis | 2002-06-18 |