Showing 1–4 of 4 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Douglas Shaulis | Gilmour | 3 |
| 2 | William Gurzenda | Rockwood Manufacturing | 1 |
| 2 | David J. Zwick | The Coleman Company | 1 |
| 2 | Craig Stephen Ketcham | Griffin Holdings | 1 |
Part of Pennsylvania
6 patents · 4 inventors · 0.9/1k pop.
Ranked #8,103 of 30,370 cities Top 30%
Showing 1–4 of 4 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Douglas Shaulis | Gilmour | 3 |
| 2 | William Gurzenda | Rockwood Manufacturing | 1 |
| 2 | David J. Zwick | The Coleman Company | 1 |
| 2 | Craig Stephen Ketcham | Griffin Holdings | 1 |
Part of Pennsylvania