Showing 1–5 of 5 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Bradley L. Trettin | David S. Smith America | 8 |
| 2 | Paul Newton Anderson | Hector Tile Company | 5 |
| 3 | Edgar C. Ray | Nalco Chemical | 2 |
| #4 | Valerie J. Webber | — | 1 |
| #4 | Thomas V. McGraw | Duo Lift Manufacturing Co. | 1 |
Part of Minnesota