Showing 1–6 of 6 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | William R. Ayers | Central Illinois Manufacturing | 8 |
| 2 | Matthew David Valentine | Central Illinois Manufacturing | 4 |
| 3 | Ricky L. Durbin | — | 2 |
| #4 | A. Richard Ayers | Central Illinois Manufacturing | 1 |
| #4 | Jerald R. Rexroad | Central Illinois Manufacturing | 1 |
| #4 | Dana Francis Foran | — | 1 |
Part of Illinois