Top Inventors at Grefco All Time
| Rank | Name | Patents |
|---|---|---|
| 1 | David L. Ruff | 3 |
| 2 | Richard B. Nielsen | 3 |
| 3 | N. Gokul Nath | 2 |
| #4 | Charles J. Vogelsang | 1 |
| #5 | Harlan E. Tarbell | 1 |
| #6 | Melvin J. Mirliss | 1 |
| #7 | Narikottile G. Nath | 1 |
| #8 | William R. White | 1 |
| #9 | Albert Collins | 1 |
| Rank | Name | Patents |
|---|---|---|
| 1 | David L. Ruff | 3 |
| 2 | Richard B. Nielsen | 3 |
| 3 | N. Gokul Nath | 2 |
| #4 | Charles J. Vogelsang | 1 |
| #5 | Harlan E. Tarbell | 1 |
| #6 | Melvin J. Mirliss | 1 |
| #7 | Narikottile G. Nath | 1 |
| #8 | William R. White | 1 |
| #9 | Albert Collins | 1 |