Showing 1–13 of 13 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Helmut K. Skyba | Unknown | 16 |
| 1 | Darrel A. Apps | Centerton Nursery | 16 |
| 3 | Daniel Schumacher | Mercedes-Benz Group Ag | 10 |
| #4 | Mark Kirgiss Clausen | — | 5 |
| #4 | Roger T. Gault | Ingersoll Equipment Co. | 5 |
| #4 | Robert Salem Abraham | Unknown | 5 |
| #7 | Bruce Roland Kahlhamer | — | 4 |
| #8 | Steven E. Jansen | Wacker | 3 |
| #9 | Robert A. Lennert | — | 1 |
| #9 | Thomas L. Gooding | — | 1 |
| #9 | H. Kurt Skyba | — | 1 |
| #9 | Edward McCardell | — | 1 |
| #9 | Joseph Scott Walters | — | 1 |
Part of Wisconsin