Showing 1–2 of 2 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Allen Seymour | Questor | 4 |
| 2 | Richard L. Helferich | The Duriron Company | 1 |
Part of Ohio
5 patents · 2 inventors · 0.4/1k pop.
Ranked #3,857 of 15,417 cities Top 30%
Showing 1–2 of 2 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Allen Seymour | Questor | 4 |
| 2 | Richard L. Helferich | The Duriron Company | 1 |
Part of Ohio