Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5262624 | Opposite surface scanning of a mark sense form | — | 1993-11-16 |
| 5001330 | Optically scanned document with fail-safe marking | — | 1991-03-19 |
| 4937439 | Method and system for creating and scanning a customized survey form | Lester A. Wanninger, John G. Fahnlander, Thomas J. Duxbury | 1990-06-26 |
| 4857715 | Overprint registration system for printing a customized survey form and scannable form therefor | John G. Fahnlander, Lester A. Wanninger | 1989-08-15 |