LandOfFree - US Patents - Listing for Hydraulic and earth engineering,Drainage or irrigation,Porous or apertured pipe, flume, or tileway

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

Recreational area construction

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

Reinforced structural elements

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

Retrievable filter element for subsurface drainage

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

Reversible interlocking field drain panel

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

Root nutrient delivery system

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

Securing device for a drainage channel

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

Seeping irrigation hosepipe

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

Segment for intake tunnels

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

Self-flushing gutter pipe

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

Self-flushing pipe

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

Self-healing bentonite sheet material composite drainage structu

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

Septic system

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

Septic system drain field

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

Septic tank drainage conduit structures

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

Septic tank drainfield installation device and method

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

Severable leaching chamber with end cap

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

Smooth interior water collection and storage assembly

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

Snake cleanable fluid flow system

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

Snake cleanable fluid flow system