Showing 1–5 of 5 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | John D. Calebaugh | — | 1 |
| 1 | Gerald A. Rosenquist | Fel-Pro Incorporated | 1 |
| 1 | Ricky L. Wittman | Amoco | 1 |
| 1 | Kenneth Mason | — | 1 |
| 1 | Mark Rosebraugh | Federal Signal | 1 |
Part of Illinois
5 patents · 5 inventors · 1.1/1k pop.
Ranked #6,342 of 22,654 cities Top 30%
Showing 1–5 of 5 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | John D. Calebaugh | — | 1 |
| 1 | Gerald A. Rosenquist | Fel-Pro Incorporated | 1 |
| 1 | Ricky L. Wittman | Amoco | 1 |
| 1 | Kenneth Mason | — | 1 |
| 1 | Mark Rosebraugh | Federal Signal | 1 |
Part of Illinois