Top Inventors at J. J. Barker Company Limited All Time
Showing 1–4 of 4 inventors
| Rank | Name | Patents |
|---|---|---|
| 1 | John C. Barker | 5 |
| 2 | Ivan P. McLaughlin | 4 |
| 3 | James O. Turnbull | 1 |
| 3 | Arthur Knight | 1 |
Showing 1–4 of 4 inventors
| Rank | Name | Patents |
|---|---|---|
| 1 | John C. Barker | 5 |
| 2 | Ivan P. McLaughlin | 4 |
| 3 | James O. Turnbull | 1 |
| 3 | Arthur Knight | 1 |