Showing 1–4 of 4 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Richard R. England | R. J. Thomas Mfg. Co. | 1 |
| 1 | Wayne W. Morris | R. J. Thomas Mfg. Co. | 1 |
| 1 | Michael W. Reed | R. J. Thomas Mfg. Co. | 1 |
| 1 | Robert A. Simonsen | R. J. Thomas Mfg. Co. | 1 |
Part of Iowa