Top Inventors at Donmark Holding All Time
| Rank | Name | Patents |
|---|---|---|
| 1 | Earl Trautman | 3 |
| 2 | Mark Toeckes | 3 |
| 3 | Cyril T. Boys | 1 |
| #4 | Edward S. Vanderploeg | 1 |
| #5 | Geoff Hall | 1 |
| #6 | Mark Robertson | 1 |
| #7 | Robert Button | 1 |
| #8 | Peter Iden | 1 |
| Rank | Name | Patents |
|---|---|---|
| 1 | Earl Trautman | 3 |
| 2 | Mark Toeckes | 3 |
| 3 | Cyril T. Boys | 1 |
| #4 | Edward S. Vanderploeg | 1 |
| #5 | Geoff Hall | 1 |
| #6 | Mark Robertson | 1 |
| #7 | Robert Button | 1 |
| #8 | Peter Iden | 1 |