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Inexpensive headwall for culverts

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

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Inlet collar for highway culverts

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

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Installation for accelerating navigation of a water ramp and met

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

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Intake apparatus for dams

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

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Integrated fish migration system

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

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Integrated tubal by-pass fishway

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

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Interlockable drainage system

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

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Internal pressure regulating system for flexible bag body,...

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

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Irrigation channel gate

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

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Irrigation channel gates

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

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Irrigation control structure

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

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Irrigation ditch gate

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

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Irrigation ditch liner

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

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Irrigation gate system

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

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