LandOfFree - US Patents - Listing for Hydraulic and earth engineering,Underground passageway, e.g., tunnel

Hydraulic and earth engineering – Underground passageway – e.g. – tunnel – Lining

Lining of tubular structures

Hydraulic and earth engineering – Underground passageway – e.g. – tunnel – Lining

Lining or relining of tunnels

Hydraulic and earth engineering – Underground passageway – e.g. – tunnel – Boring

Lining tunnel wall made by shield type tunnel excavator

Hydraulic and earth engineering – Underground passageway – e.g. – tunnel – Lining

Linings for sewers

Hydraulic and earth engineering – Underground passageway – e.g. – tunnel – Lining

Mapping of contaminants in geologic formations

Hydraulic and earth engineering – Underground passageway – e.g. – tunnel – Lining

Material and method for lining pipes

Hydraulic and earth engineering – Underground passageway – e.g. – tunnel – Boring

Material and method for lubricating the metal surfaces of an...

Hydraulic and earth engineering – Underground passageway – e.g. – tunnel – Boring

Mechanism and method for continuously constructing reinforced co

Hydraulic and earth engineering – Underground passageway – e.g. – tunnel – Boring

Method and apparatus for advancing cylindrical bodies undergroun

Hydraulic and earth engineering – Underground passageway – e.g. – tunnel – Boring

Method and apparatus for advancing cylindrical bodies undergroun

Hydraulic and earth engineering – Underground passageway – e.g. – tunnel – Vertical

Method and apparatus for constructing reinforced concrete walls

Hydraulic and earth engineering – Underground passageway – e.g. – tunnel – Boring

Method and apparatus for constructing underground structure

Hydraulic and earth engineering – Underground passageway – e.g. – tunnel – Boring

Method and apparatus for continuous production of quick-setting

Hydraulic and earth engineering – Underground passageway – e.g. – tunnel – Boring

Method and apparatus for continuously boring and lining tunnels

Hydraulic and earth engineering – Underground passageway – e.g. – tunnel – Boring

Method and apparatus for continuously boring and lining tunnels

Hydraulic and earth engineering – Underground passageway – e.g. – tunnel – Boring

Method and apparatus for continuously excavating shaft and tunne

Hydraulic and earth engineering – Underground passageway – e.g. – tunnel – Boring

Method and apparatus for controlling attitude of shield excavato

Hydraulic and earth engineering – Underground passageway – e.g. – tunnel – Boring

Method and apparatus for detecting collapse of natural ground in

Hydraulic and earth engineering – Underground passageway – e.g. – tunnel

Method and apparatus for effecting high pressure isolation of li