Showing 1–5 of 5 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Thomas G. Herron | Idatech | 2 |
| 2 | Fred A. Carmichael | — | 1 |
| 2 | Harold K. Hilfiker | Hilfiker Pipe Co. | 1 |
| 2 | William K. Hilfiker | Hilfiker Pipe Co. | 1 |
| 2 | William B. Hilfiker | Hilfiker Pipe Co. | 1 |
Part of California