Issued Patents 2021
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11181081 | Air intake for work vehicle | Timothy L. Ketterhagen, Benjamin J. Schlesser, Noah F. Homan | 2021-11-23 |
| D913334 | Air intake device for an internal combustion engine | Emily K. Kuczmarski, Norman K. Keller, Axel J. Hoogland, Michael J. Schuller, Charles N. Warren +6 more | 2021-03-16 |