Showing 1–6 of 6 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Neil Vincent Harber | John Deere | 19 |
| 2 | William A. Niehaus | Rite-Hite Holding | 16 |
| 3 | Andrew W. Kelly | John Deere | 9 |
| #4 | Jeffrey E. Errthum | Kann Manufacturing | 2 |
| #5 | Jerry Sigwarth | Mi-T-M | 1 |
| #5 | Anthony J. Berns | — | 1 |
Part of Iowa