Showing 1–19 of 19 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Eric C. Springer | Copper John | 11 |
| 2 | Murray A. Rowe | Cmi Limited | 8 |
| 3 | Ewald R. Ulmer | Cmi Limited | 6 |
| #4 | Gary J. Marshik | Amesbury Group | 5 |
| #5 | Eric Larsgaard | Avery Outdoors | 3 |
| #5 | Robert Sandnes | Pearson Incorporated | 3 |
| #7 | Kevin Kent Stahlecker | Behr Heat Transfer Systems | 2 |
| #7 | Norman J. Kaarre | Mccord Heat Transfer | 2 |
| #7 | Dale Lewis Kroger | Behr Heat Transfer Systems | 2 |
| #10 | Kevin Duane Jensen | — | 1 |
| #10 | Robert George Sandness | — | 1 |
| #10 | Tom Schorn | — | 1 |
| #10 | Jerry Chaon | Cmi Limited | 1 |
| #10 | Stanley Olson | — | 1 |
| #10 | Darrell R. Kaarup | — | 1 |
| #10 | John Robert Lease | — | 1 |
| #10 | Thomas M. Lease | Mccord Heat Transfer | 1 |
| #10 | Dean L. Libra | — | 1 |
| #10 | Peter Bendorf | Unknown | 1 |
Part of South Dakota