Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D994603 | Motor housing for snowthrower | Philip C. Dretzka, David J. Martin, Brian Algot Hanson | 2023-08-08 |
| D853061 | Debris blower | Philip C. Dretzka, Tyler E. Peterson, Jeffrey J. Schwichtenberg | 2019-07-02 |