Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10724492 | Snowthrower with removable self-heating starter battery pack | Jeffrey M. Zeiler, Robert Koenen, Jason A. Hansen | 2020-07-28 |
| 10233889 | Snowthrower with removable self-heating starter battery pack | Jeffrey M. Zeiler, Robert Koenen, Jason A. Hansen | 2019-03-19 |
| 9726135 | Snowthrower with removable self-heating starter battery pack | Jeffrey M. Zeiler, Robert Koenen, Jason A. Hansen | 2017-08-08 |