Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11280299 | Filter element for an engine air filter assembly having a nonwoven pre-filter and related method | Marcel Holzwarth | 2022-03-22 |
| 11149699 | Filter element for an engine air filter assembly having a nonwoven pre-filter and related method | Marcel Holzwarth | 2021-10-19 |