Showing 1–6 of 6 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Christopher Harvey | Curwood | 5 |
| 2 | William Shorma | Rush Company | 4 |
| 3 | Andrew Hejna | Rush Company | 1 |
| 3 | Clarence B. Vanderlei | — | 1 |
| 3 | Lyle W. Coleman | — | 1 |
| 3 | Daniel Fathke | Rush Company | 1 |
Part of South Dakota