Showing 1–7 of 7 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | John Redshaw | Castrol Limited | 4 |
| 2 | Eric Kelsey | Caterpillar | 2 |
| 2 | Armand Ladage | Elektroschmelzwerk Kempten Gmbh | 2 |
| #4 | James F. Boekeloo | — | 1 |
| #4 | Mario C. Sabino | — | 1 |
| #4 | Dorothy L. Craigen | — | 1 |
| #4 | Alfred Balentine, III | — | 1 |
Part of Illinois