Top Inventors at Service (Engineers) Limited All Time
| Rank | Name | Patents |
|---|---|---|
| 1 | George Ryckman, deceased | 2 |
| 2 | Robert Gater | 2 |
| 3 | David L. Hancock | 1 |
| #4 | Graham Davies | 1 |
| #5 | Michael J. Gilman | 1 |
| #6 | Robert M. Rushton | 1 |
| #7 | Frederick A. Turnock | 1 |
| #8 | Peter A. Pass | 1 |
| Rank | Name | Patents |
|---|---|---|
| 1 | George Ryckman, deceased | 2 |
| 2 | Robert Gater | 2 |
| 3 | David L. Hancock | 1 |
| #4 | Graham Davies | 1 |
| #5 | Michael J. Gilman | 1 |
| #6 | Robert M. Rushton | 1 |
| #7 | Frederick A. Turnock | 1 |
| #8 | Peter A. Pass | 1 |