Showing 1–2 of 2 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Frank W. Christianson | Christianson Systems | 2 |
| 1 | Roy O. Christianson | Christianson Systems | 2 |
Part of Minnesota
4 patents · 2 inventors · 21.5/1k pop.
Ranked #6,634 of 20,767 cities Top 35%
Showing 1–2 of 2 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Frank W. Christianson | Christianson Systems | 2 |
| 1 | Roy O. Christianson | Christianson Systems | 2 |
Part of Minnesota