Device and method for closing a hole in the bottom.
NL1034000C2
Sealing device and method for closing a hole in the bottom.
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Closing device for closing system for closing hole in ground has plate having opening through which locking mechanism may be locked or unlocked by tool
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Sewer pipe system provided with a control device.
NL1027918C2
Sealing member, gate valve and method.
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Float valve, float weir and method for its use.
EP1254991A2
Assembly of a gutter and a grate
NL1019376C2
Sidewalk vault with securing and method thereof.
NL1010851C2
Barrier for regulating water flow along e.g. river, drain, ditch or canal, has reduced play between cog wheels and teeth in the mechanism used to move gate when this gate is open
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Drain pit, contains universal fixing device with fasteners for mounting a screen that divides the pit into collection and discharge chambers
NL1010133C1
Sewer connection arrangement, especially for above ground sewer pipe and underground mains sewer pit, uses connecting means on both sewer sections that can move relative to each other
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Drain sump for road gutters
NL1005666A1
Pavement gulley for rainwater disposal - comprises concrete case with base and peripheral walls and having removable connecting device with pavement cover
