Showing 1–12 of 12 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Thomas D. Bebernes | John Deere | 3 |
| 2 | Roger D. Stephenson | John Deere | 1 |
| 2 | Wilbur M. Davis | John Deere | 1 |
| 2 | Stephen K. Parsons | John Deere | 1 |
| 2 | Melvin William Keller | John Deere | 1 |
| 2 | Larry N. Smith | John Deere | 1 |
| 2 | Larry Workman | Lasco Fittings | 1 |
| 2 | Jake Mein | — | 1 |
| 2 | Stanley P. Wellman | John Deere | 1 |
| 2 | David Henry Diebold | John Deere | 1 |
| 2 | John Phillip Jacquinot | — | 1 |
| 2 | John Lewis Rukgaber | John Deere | 1 |
Part of Iowa