Showing 1–8 of 8 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Gregory W. Hulstein | Link Mfg. | 2 |
| 1 | Tye B. Davis | Link Mfg. | 2 |
| 3 | Michael T. Holm | — | 1 |
| 3 | David L. Vogel | Eaton | 1 |
| 3 | Robert den Hoed | Unknown | 1 |
| 3 | Marlo G. Van Klompenburg | Pella | 1 |
| 3 | William E. Ott | Honeywell | 1 |
| 3 | Warren C. Vander Helm | — | 1 |
Part of Iowa