Top Inventors at Pipe Liners All Time
| Rank | Name | Patents |
|---|---|---|
| 1 | Patrick R. Ledoux | 7 |
| 2 | Luc R. Fourgaut | 4 |
| 3 | James Tate | 2 |
| #4 | John D. Crabtree | 2 |
| #5 | Lue Fourgaut | 1 |
| Rank | Name | Patents |
|---|---|---|
| 1 | Patrick R. Ledoux | 7 |
| 2 | Luc R. Fourgaut | 4 |
| 3 | James Tate | 2 |
| #4 | John D. Crabtree | 2 |
| #5 | Lue Fourgaut | 1 |