Showing 1–3 of 3 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | John D. Preheim | Raven Industries | 7 |
| 2 | Zachary T. Pramann | Kooima Company | 1 |
| 2 | Andrew F. Johnke | Ortloff Engineers | 1 |
Part of South Dakota
9 patents · 3 inventors
Ranked #9,528 of 43,797 cities Top 25%
Showing 1–3 of 3 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | John D. Preheim | Raven Industries | 7 |
| 2 | Zachary T. Pramann | Kooima Company | 1 |
| 2 | Andrew F. Johnke | Ortloff Engineers | 1 |
Part of South Dakota