Showing 1–4 of 4 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Nicolaas M. Berkelmans | — | 1 |
| 1 | Royce R. D. Hakkers | Veg - Gasinstituut N.V. | 1 |
| 1 | Cornelis van Eijsden | Borden | 1 |
| 1 | Piet van Berkum | Vmi Epe Holland B.V. | 1 |
4 patents · 4 inventors
Ranked #6,634 of 20,767 cities Top 35%
Showing 1–4 of 4 inventors
| Rank | Inventor | Primary Company | Patents |
|---|---|---|---|
| 1 | Nicolaas M. Berkelmans | — | 1 |
| 1 | Royce R. D. Hakkers | Veg - Gasinstituut N.V. | 1 |
| 1 | Cornelis van Eijsden | Borden | 1 |
| 1 | Piet van Berkum | Vmi Epe Holland B.V. | 1 |