Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11767786 | V-twin engine assembly | Jacob Zuehl | 2023-09-26 |
| 11668270 | Electronic fuel injection module | Jacob Zuehl, Kevin Leix | 2023-06-06 |
| 11572852 | Low pressure gaseous fuel injection system | — | 2023-02-07 |
| 11408325 | V-Twin engine assembly | Jacob Zuehl | 2022-08-09 |
| 11002234 | Fuel delivery injector | David W. Procknow, Jacob Zuehl, David A. Kratz | 2021-05-11 |
| 10677205 | Fuel delivery injector | David W. Procknow, Jacob Zuehl, David A. Kratz | 2020-06-09 |
| 10197025 | Fuel delivery injector | David W. Procknow, Jacob Zuehl, David A. Kratz | 2019-02-05 |
| 9945281 | Cooling system for air-cooled engines | David W. Procknow, Jacob Zuehl | 2018-04-17 |
| 8863485 | Hybrid lawn mower drive system | William Latus, Robert Koenen, David W. Procknow, Jeffrey Berger, Jason D. Elvers | 2014-10-21 |