Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9857802 | Gaseous fuel control device for engines | Kristian W. Yates, David G. Fisher, Hillary H. Grimes, III | 2018-01-02 |
| 9303575 | Automatic set point adjustment system and method for engine air-fuel ratio control system | David G. Fisher, Richard Fisher, Hillary H. Grimes, III, Kristian W. Yates, John A. Zahir +1 more | 2016-04-05 |