Top Inventors at Ultra-D Coöperatief U.A. All Time
Showing 1–6 of 6 inventors
| Rank | Name | Patents |
|---|---|---|
| 1 | Abraham Karel Riemens | 4 |
| 2 | Bart Gerard Bernard Barenbrug | 3 |
| 2 | Waltherus Antonius Hendrikus Roelen | 3 |
| #4 | Hans Zuidema | 2 |
| #5 | Herman Geert Marsman | 1 |
| #5 | Peter Roelen | 1 |