Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7071002 | Method and system for vehicle emission testing | Robert Tefft, S. Jay Gordon, Thomas Austin, Thomas R. Carlson | 2006-07-04 |
| 6775602 | Method and system for vehicle emissions testing through on-board diagnostics unit inspection | S. Jay Gordon, Robert Tefft, Robert W. Kennedy, Jess Yowell | 2004-08-10 |
| 6623975 | Method and system for vehicle emission testing | Robert Tefft, S. Jay Gordon | 2003-09-23 |