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Portable water conveyance assembly

Hydraulic and earth engineering – Fluid control – treatment – or containment – Flow control
Patent

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Positive flow estuary structure

Hydraulic and earth engineering – Fluid control – treatment – or containment – Flow control
Patent

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Precast arch structure with skewed ends

Hydraulic and earth engineering – Fluid control – treatment – or containment – Flow control
Reexamination Certificate

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Precast concrete culvert section

Hydraulic and earth engineering – Fluid control – treatment – or containment – Flow control
Patent

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Precast concrete culvert section

Hydraulic and earth engineering – Fluid control – treatment – or containment – Flow control
Patent

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Precast concrete culvert system

Hydraulic and earth engineering – Fluid control – treatment – or containment – Flow control
Patent

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Precast concrete culvert system

Hydraulic and earth engineering – Fluid control – treatment – or containment – Flow control
Patent

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Precast concrete culvert system

Hydraulic and earth engineering – Fluid control – treatment – or containment – Flow control
Patent

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Precast concrete culvert system

Hydraulic and earth engineering – Fluid control – treatment – or containment – Flow control
Reexamination Certificate

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Precast concrete wingwall

Hydraulic and earth engineering – Fluid control – treatment – or containment – Flow control
Patent

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Precast prerotation basin system

Hydraulic and earth engineering – Fluid control – treatment – or containment
Patent

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Precast safety end and form therefor

Hydraulic and earth engineering – Fluid control – treatment – or containment – Flow control
Reexamination Certificate

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Prefabricated civil engineering module, method for the construct

Hydraulic and earth engineering – Fluid control – treatment – or containment – Flow control
Patent

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Prefabricated culvert system

Hydraulic and earth engineering – Fluid control – treatment – or containment – Flow control
Patent

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Prefabricated pre-cast culvert provided with couplings

Hydraulic and earth engineering – Fluid control – treatment – or containment – Flow control
Patent

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Prefabricated support and covering structure, particularly for c

Hydraulic and earth engineering – Fluid control – treatment – or containment – Flow control
Patent

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Pressure secured liquid damming protective bank device and metho

Hydraulic and earth engineering – Fluid control – treatment – or containment – Flow control
Patent

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Process and apparatus for maintaining a desired depth of a water

Hydraulic and earth engineering – Fluid control – treatment – or containment – Settling of suspended matter in a specific location
Patent

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Process and device for blocking a well opening out in the ceilin

Hydraulic and earth engineering – Fluid control – treatment – or containment – Fluid storage in earthen cavity
Patent

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Process and device providing tightened operational safety for un

Hydraulic and earth engineering – Fluid control – treatment – or containment – Fluid storage in earthen cavity
Patent

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