Showing 1–4 of 4 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Charles Grunewald | Unknown | 4 |
| 2 | Elston Howard Kangas | — | 1 |
| 2 | Mike Filipovich | Essilor International (Compagnie Generale D'Optique) | 1 |
| 2 | Daniel R. Anonen | Brunswick | 1 |
Part of Minnesota
7 patents · 4 inventors · 11.1/1k pop.
Ranked #61,033 of 111,555 cities Top 55%
Showing 1–4 of 4 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Charles Grunewald | Unknown | 4 |
| 2 | Elston Howard Kangas | — | 1 |
| 2 | Mike Filipovich | Essilor International (Compagnie Generale D'Optique) | 1 |
| 2 | Daniel R. Anonen | Brunswick | 1 |
Part of Minnesota