Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5809780 | Hydraulic control valve | Leendert Willem C. de Jong, Willem Herman Masseling | 1998-09-22 |
| 5647729 | Radial piston pump | Leendert Willem C. de Jong, Willem Herman Masseling | 1997-07-15 |
| 5542823 | Reservoir body for a radial plunger pump | Leendert Willem C. de Jong, Willem Herman Masseling | 1996-08-06 |
| 5509347 | Radial piston pump | Leendert Willem C. de Jong, Willem Herman Masseling | 1996-04-23 |