Showing 1–2 of 2 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Donald R. Onken | Unknown | 19 |
| 2 | Joseph Earl Powley | — | 1 |
Part of Illinois
20 patents · 2 inventors · 64.1/1k pop.
Ranked #38,992 of 111,555 cities Top 35%
Showing 1–2 of 2 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Donald R. Onken | Unknown | 19 |
| 2 | Joseph Earl Powley | — | 1 |
Part of Illinois