Showing 1–4 of 4 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | John D. Preheim | Raven Industries | 2 |
| 2 | Andrew F. Johnke | Ortloff Engineers | 1 |
| 2 | Sean Coffman | Full-Swing Golf | 1 |
| 2 | Timothy Eldred Kilmer | — | 1 |
Part of South Dakota
5 patents · 4 inventors · 2.3/1k pop.
Ranked #13,878 of 44,143 cities Top 35%
Showing 1–4 of 4 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | John D. Preheim | Raven Industries | 2 |
| 2 | Andrew F. Johnke | Ortloff Engineers | 1 |
| 2 | Sean Coffman | Full-Swing Golf | 1 |
| 2 | Timothy Eldred Kilmer | — | 1 |
Part of South Dakota