Top Inventors at Efficiency Production All Time
Showing 1–4 of 4 inventors
| Rank | Name | Patents |
|---|---|---|
| 1 | Luther Bradford Barringer | 4 |
| 2 | John B. Cook | 2 |
| 3 | Daniel Lewis | 1 |
| 3 | Melvin Pike | 1 |
Showing 1–4 of 4 inventors
| Rank | Name | Patents |
|---|---|---|
| 1 | Luther Bradford Barringer | 4 |
| 2 | John B. Cook | 2 |
| 3 | Daniel Lewis | 1 |
| 3 | Melvin Pike | 1 |