Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7415335 | Mobile data collection and processing system and methods | David M. Bell, John Daly, Michael Hattermann | 2008-08-19 |
| 6766343 | Method and apparatus for coordinate system conversions | David M. Bell, Dennis L. Maly | 2004-07-20 |