Showing 1–6 of 6 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | John C. Cathcart, Sr. | Unknown | 2 |
| 1 | David Roy Harms | Hubbell Incorporated | 2 |
| 3 | Eugene K. Cathcart, Sr. | Unknown | 1 |
| 3 | Roland D. Young | Unknown | 1 |
| 3 | Wayne A. Shook | — | 1 |
| 3 | Timothy Place | Cablofil | 1 |
Part of Illinois