Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11598299 | Fuel filter | Randall C. Harkema, Mike Van Allsburg | 2023-03-07 |
| 9816493 | Fuel injection pump | Mike Van Allsburg, Gregg R. Spoolstra, Randall C. Harkema | 2017-11-14 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11598299 | Fuel filter | Randall C. Harkema, Mike Van Allsburg | 2023-03-07 |
| 9816493 | Fuel injection pump | Mike Van Allsburg, Gregg R. Spoolstra, Randall C. Harkema | 2017-11-14 |