Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12168188 | Quick oil change filter and assembly | Elizabeth Woytach, Bryce Metcalf, Randall Ammentorp, Chris Martinek, Glen Stroik | 2024-12-17 |
| 11571640 | Quick oil change filter and assembly | Elizabeth Woytach, Bryce Metcalf, Randall Ammentorp, Chris Martinek, Glen Stroik | 2023-02-07 |
| 11477939 | Mower deck insert | Jeffrey M. Zeiler, Kenneth W. Derra, Scott Funke, David W. Procknow | 2022-10-25 |
| 10167766 | Reverse fin cooling fan | Brett Birschbach, Jeffery P. Feist, Casey Groh, Brian Johnson, Randall J. Klotka +4 more | 2019-01-01 |
| 9926832 | Reverse fin cooling fan | Brett Birschbach, Jeffrey P. Feist, Casey Groh, Brian Johnson, Randall J. Klotka +1 more | 2018-03-27 |
| 6279522 | Drive train for overhead cam engine | Thomas A. Immel, Gar M. Adams, Kyle I. Kubista | 2001-08-28 |