Fish guiding system for use in river, has canalization comprising funnel shaped inlet opening placed upstream of river and outlet opening placed downstream of river, where inlet opening is oriented towards downstream of river
WO2008092479A1
Submergible building structure
NL1032904C2
Modular filter for treated wastewater, comprises identical concrete basins each with side wall containing lead through opening for pipe
NL1029915C2
Archimedes screw pump for water and fish, has helical flange with one end located at point on the screw periphery
NL1026540C1
Diluting sampler, for gas concentration measuring device, comprises two chambers connected by first channel and connected to channels for introducing and removing gas
NL1026476C2
Fish guidance system.
NL1021537C2
Pumping station, has barrier located inside outlet pipe connected to higher water level
NL1018875C2
Traffic light control regulates at least two crossing traffic flows and comprises at least two traffic lights stopping or releasing traffic flow
NL1007977C2
Settling tank for separation of active sludge from treated sewage
