Top Inventors at Steffens Enterprises All Time
Showing 1–11 of 11 inventors
| Rank | Name | Patents |
|---|---|---|
| 1 | Charles J. Steffens | 15 |
| 2 | Scott P. Crossman | 6 |
| 3 | Craig Mulder | 4 |
| #4 | John D. Kooiker | 3 |
| #5 | Douglas C. Steffens | 2 |
| #5 | James P. Sheeran | 2 |
| #5 | Mark J. Heintskill | 2 |
| #5 | Roger L. Erickson | 2 |
| #9 | Chuck J. Steffens | 1 |
| #9 | John M. Arend | 1 |
| #9 | Lynne F. Hunter | 1 |