LandOfFree - US Patents - Listing for Hydraulic and earth engineering,Drainage or irrigation,Porous waterway, e.g., sand drain, etc.

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Subsurface drainage system and drain structure therefor

Hydraulic and earth engineering – Drainage or irrigation – Porous waterway – e.g. – sand drain – etc.

Reexamination Certificate

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Subsurface drainage system and drain structure therefor

Hydraulic and earth engineering – Drainage or irrigation – Porous waterway – e.g. – sand drain – etc.

Reexamination Certificate

[ 0.00 ] – not rated yet Voters 0 Comments 0

Subsurface drainage system and method of installing the same

Hydraulic and earth engineering – Drainage or irrigation – Porous waterway – e.g. – sand drain – etc.

Reexamination Certificate

[ 0.00 ] – not rated yet Voters 0 Comments 0

Subterranean drainage device

Hydraulic and earth engineering – Drainage or irrigation – Porous waterway – e.g. – sand drain – etc.

Reexamination Certificate

[ 0.00 ] – not rated yet Voters 0 Comments 0

System for draining land areas through siphoning from a permeabl

Hydraulic and earth engineering – Drainage or irrigation – Porous waterway – e.g. – sand drain – etc.

Patent

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Use of porous medium in an integrated hydrologic circuit for wat

Hydraulic and earth engineering – Drainage or irrigation – Porous waterway – e.g. – sand drain – etc.

Patent

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Utility line bedding for storm water management and storm...

Hydraulic and earth engineering – Drainage or irrigation – Porous waterway – e.g. – sand drain – etc.

Reexamination Certificate

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Vertical drain

Hydraulic and earth engineering – Drainage or irrigation – Porous waterway – e.g. – sand drain – etc.

Patent

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Void-maintaining synthetic drainable base courses and...

Hydraulic and earth engineering – Drainage or irrigation – Porous waterway – e.g. – sand drain – etc.

Reexamination Certificate

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Water resource recycling system

Hydraulic and earth engineering – Drainage or irrigation – Porous waterway – e.g. – sand drain – etc.

Reexamination Certificate

[ 0.00 ] – not rated yet Voters 0 Comments 0

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