Issued Patents 2011
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7864986 | Optical mark reading that uses a disregard state as part of an unambiguous symbology of marks to fill into response bubbles | Bruce D. Holenstein, Victor F. Berutti, Paul J. Holenstein | 2011-01-04 |