Top Inventors at Hydra-Tight Limited All Time
| Rank | Name | Patents |
|---|---|---|
| 1 | Harry D. Percival-Smith | 2 |
| 2 | David A. Barker | 1 |
| 3 | Graham A. Simms | 1 |
| #4 | Martin Richardson | 1 |
| #5 | Peter R. Aston | 1 |
| #6 | Peter Wellings | 1 |
| #7 | Frederick Heaton | 1 |
| Rank | Name | Patents |
|---|---|---|
| 1 | Harry D. Percival-Smith | 2 |
| 2 | David A. Barker | 1 |
| 3 | Graham A. Simms | 1 |
| #4 | Martin Richardson | 1 |
| #5 | Peter R. Aston | 1 |
| #6 | Peter Wellings | 1 |
| #7 | Frederick Heaton | 1 |