Top Inventors at Spearhead Industries All Time
Showing 1–3 of 3 inventors
| Rank | Name | Patents |
|---|---|---|
| 1 | Gerald D. Thill | 7 |
| 2 | Mark D. Margolis | 2 |
| 3 | John L. Marquesen | 1 |
Showing 1–3 of 3 inventors
| Rank | Name | Patents |
|---|---|---|
| 1 | Gerald D. Thill | 7 |
| 2 | Mark D. Margolis | 2 |
| 3 | John L. Marquesen | 1 |