Showing 1–4 of 4 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | William K. Hilfiker | Hilfiker Pipe Co. | 1 |
| 1 | James R. Trimble | — | 1 |
| 1 | Melvin Hubbard | — | 1 |
| 1 | Loretta A. Egan | — | 1 |
Part of California
4 patents · 4 inventors · 0.1/1k pop.
Ranked #10,539 of 30,730 cities Top 35%
Showing 1–4 of 4 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | William K. Hilfiker | Hilfiker Pipe Co. | 1 |
| 1 | James R. Trimble | — | 1 |
| 1 | Melvin Hubbard | — | 1 |
| 1 | Loretta A. Egan | — | 1 |
Part of California