LandOfFree - US Patents - Listing for Hydraulic and earth engineering,Drainage or irrigation

Hydraulic and earth engineering – Drainage or irrigation – Control means responsive to sensed condition

Control method for open channel

Hydraulic and earth engineering – Drainage or irrigation – Control means responsive to sensed condition

Control system for draining, irrigating and heating an athletic

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

Cooling water intake system

Hydraulic and earth engineering – Drainage or irrigation – Porous or apertured pipe – flume – or tileway

Corrugated drainage tube

Hydraulic and earth engineering – Drainage or irrigation – Porous or apertured pipe – flume – or tileway

Corrugated drainage tubing with helically arranged drainage open

Hydraulic and earth engineering – Drainage or irrigation – Porous or apertured pipe – flume – or tileway

Corrugated leaching chamber

Hydraulic and earth engineering – Drainage or irrigation – Porous or apertured pipe – flume – or tileway

Corrugated leaching chamber with hollow pillar supports

Hydraulic and earth engineering – Drainage or irrigation – Porous or apertured pipe – flume – or tileway

Corrugated leaching chamber with hollow ribbing

Hydraulic and earth engineering – Drainage or irrigation – Porous or apertured pipe – flume – or tileway

Coupler for leaching chamber systems

Hydraulic and earth engineering – Drainage or irrigation – Porous or apertured pipe – flume – or tileway

Coupler for leaching chamber systems

Hydraulic and earth engineering – Drainage or irrigation – Porous or apertured pipe – flume – or tileway

Coupling structure for a leaching chamber

Hydraulic and earth engineering – Drainage or irrigation – Including subsurface moisture barrier

Cover for a drainage arrangement and a method of producing...

Hydraulic and earth engineering – Drainage or irrigation

Cultivation plant and use thereof

Hydraulic and earth engineering – Drainage or irrigation – Porous or apertured pipe – flume – or tileway

Culvert drainpipe system and method of use

Hydraulic and earth engineering – Drainage or irrigation

Damming and barrier-forming device and method

Hydraulic and earth engineering – Drainage or irrigation

De-watering system

Hydraulic and earth engineering – Drainage or irrigation – Having regulation of flow through channel

Decants of tailings dams

Hydraulic and earth engineering – Drainage or irrigation – Porous or apertured pipe – flume – or tileway

Deep root watering unit

Hydraulic and earth engineering – Drainage or irrigation

Desalting irrigation and its apparatus