Showing 1–5 of 5 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Wallace B. Bolte | Big Iron Drilling | 1 |
| 1 | Lyle W. Mundell | Clark Equipment | 1 |
| 1 | Donald K. Schmidt | Clark Equipment | 1 |
| 1 | Jane Marie Simmons | AT&T | 1 |
| 1 | Robert Jon Steffan | Envirogen | 1 |
Part of North Dakota