Showing 1–5 of 5 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | David Hondred | Pioneer (Corteva) | 1 |
| 1 | Harry A. Burns | Fisher Controls International | 1 |
| 1 | Mary Rupe | Pioneer (Corteva) | 1 |
| 1 | Bjorn Johnson | Vermeer Manufacturing | 1 |
| 1 | John Gary Gardner | Vermeer Manufacturing | 1 |
Part of Iowa