Patents per Year
Top Inventors at Keystone Industries All Time
Showing 1–11 of 11 inventors
| Rank | Name | Patents |
|---|---|---|
| 1 | Mark P. Scott | 4 |
| 2 | Anthony L. Lucas | 3 |
| 2 | Charles L. Van Auken | 3 |
| 2 | Steve A. Brough | 3 |
| #5 | Russell J Huggins | 2 |
| #6 | Todd A. Krahl | 1 |
| #6 | Allen Smith | 1 |
| #6 | John F. Deppen | 1 |
| #6 | Julius I. Pershwitz | 1 |
| #6 | Marlin E. Clark | 1 |
| #6 | Ross G. Carle | 1 |