Showing 1–23 of 23 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Paul H. Martin | Diesel Equipment Limited | 20 |
| 2 | Bill Spiegel | — | 6 |
| 3 | Charles F Studley | Unknown | 3 |
| #4 | H. Clayton McDonald | — | 2 |
| #5 | Alan H. Dewey | — | 1 |
| #5 | William Nugent | — | 1 |
| #5 | Charles Wade Huckaby | — | 1 |
| #5 | Emory E Cross | — | 1 |
| #5 | Eugene Emery Cross | Unknown | 1 |
| #5 | Albert Boatwright | — | 1 |
| #5 | Fredric C. Pearce, Jr. | — | 1 |
| #5 | Peter M. Diamond | — | 1 |
| #5 | James L. Ritch | Unknown | 1 |
| #5 | Kevin L. Larson | — | 1 |
| #5 | John Ludwig | — | 1 |
| #5 | Marilyn Horstmyer | — | 1 |
| #5 | Michael Utter | Unknown | 1 |
| #5 | Yvongular Campbell | — | 1 |
| #5 | Willie Tompkins | — | 1 |
| #5 | Charles Stewart Parsley | — | 1 |
| #5 | Trampus Fillingim | Unknown | 1 |
| #5 | Archie T Johnson, Sr. | Unknown | 1 |
| #5 | Archie T. Johnson, III | Unknown | 1 |
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