Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7624914 | Validating removable fare collection system | David Lapczynski | 2009-12-01 |
| 7469817 | Validating removable fare collection system | David Lapczynski | 2008-12-30 |
| 5241360 | Distance measuring device utilizing semiconductor laser | Claiborne M. Key, Kevin R. Baker | 1993-08-31 |