Top Inventors at C-R-O All Time
| Rank | Name | Patents |
|---|---|---|
| 1 | Fredrick J. Balfanz | 5 |
| 2 | August C. Mingesz | 2 |
| 3 | Elmer L. Griebeler | 2 |
| #4 | Fred Balfanz | 1 |
| #5 | Harry Hooper | 1 |
| #6 | James D. Kellogg | 1 |
| #7 | James A. Nelson | 1 |
| #8 | Robert Ludwigson | 1 |
| #9 | Thomas O'Donnell | 1 |
| #10 | James A. Howery | 1 |
| #11 | Daryl Schuettpelz | 1 |