Showing 1–8 of 8 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Michael Joseph Verhulst | John Deere | 2 |
| 1 | Jonathan Michael Wuest | John Deere | 2 |
| 3 | Paul A. Cartwright | Vermeer Manufacturing | 1 |
| 3 | John Bohlmann | Cargill, Incorporated | 1 |
| 3 | Roger D. Stephenson | John Deere | 1 |
| 3 | Benjamin M. Lovett | John Deere | 1 |
| 3 | Darwin Daniel Fish | John Deere | 1 |
| 3 | Daniel E. Derscheid | John Deere | 1 |
Part of Iowa