Issued Patents 2023
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D990645 | Oil filter | Elizabeth Woytach, Randall Ammentorp | 2023-06-27 |
| 11571640 | Quick oil change filter and assembly | Elizabeth Woytach, Randall Ammentorp, Chris Martinek, Rodney Balzar, Glen Stroik | 2023-02-07 |