Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6287519 | Hand-held vehicle exhaust analyzer | Jonathan D. Nordman, Timothy J. Wolf, Troy Liebl, Peter D. Johnson | 2001-09-11 |
| 5993743 | Hand-held vehicle exhaust analyzer | Jonathan D. Nordman, Timothy J. Wolf, Troy Liebl, Peter D. Johnson | 1999-11-30 |
| 5683261 | Removable coupling module for mechanically multiplexing conductors | Jerome C. Ahles, Randee L. Kyrola | 1997-11-04 |
| 4850198 | Time based cooling below set point temperature | Robert W. Helt | 1989-07-25 |