Showing 1–7 of 7 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Robert Blackwell | Kinze Manufacturing | 2 |
| 1 | Todd E. Kniffen | Maytag | 2 |
| 3 | Larry Koenig | Jam'N Fitness | 1 |
| 3 | Jeret Clay Koenig | — | 1 |
| 3 | Steven M. Christian | Lear | 1 |
| 3 | Donald G. Eggerling | Holden'S Foundation Seeds | 1 |
| 3 | Robert A. Schulte | Acp | 1 |
Part of Iowa