Top Inventors at Dempster Industries All Time
| Rank | Name | Patents |
|---|---|---|
| 1 | Richard J. Ehmke | 4 |
| 2 | John E. Blumer | 3 |
| 3 | Arthur F. Linsenmeyer | 3 |
| #4 | John H. Walker | 1 |
| #5 | Roy Smith | 1 |
| #6 | Timothy L. Miller | 1 |
| #7 | Thomas N. Shirk | 1 |
| Rank | Name | Patents |
|---|---|---|
| 1 | Richard J. Ehmke | 4 |
| 2 | John E. Blumer | 3 |
| 3 | Arthur F. Linsenmeyer | 3 |
| #4 | John H. Walker | 1 |
| #5 | Roy Smith | 1 |
| #6 | Timothy L. Miller | 1 |
| #7 | Thomas N. Shirk | 1 |