Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4557832 | Apparatus for removing oil from water | — | 1985-12-10 |
| 4437244 | Method for sucking up soil or sludge by means of a suction hopper dredge as well as a suction dredge for applying the method | — | 1984-03-20 |
| 4400895 | Drag head for a hopper suction dredge | — | 1983-08-30 |
| 4394265 | Vessel in particular suction dredger provided with means for removing oil from a water surface | Nicolaas J. van Drimmelen, James P. Barneveld Binkhuysen, Johan van Renssen | 1983-07-19 |
| 4344239 | Dragging type head for a suction dredger | — | 1982-08-17 |
| 4259795 | Dragging type cutter head for a suction dredger | — | 1981-04-07 |
| 4255882 | Dragging type cutter head for a suction dredger | — | 1981-03-17 |