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

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All-conditions tunnel boring machine

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

Reexamination Certificate

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Apparatus and a method for distributing concrete and similar mat

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

Patent

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Apparatus and method for providing negative buoyancy for tunnel

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

Patent

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Apparatus and method for tunnel construction with shield drive

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

Patent

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Apparatus for and method of driving tunnels

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

Patent

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Apparatus for and method of driving tunnels

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

Patent

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Apparatus for construction of continuous article having bores

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

Patent

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Apparatus for controlling direction of underground excavator

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

Patent

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Apparatus for detecting position of underground excavator and ma

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

Patent

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Apparatus for the construction of tunnels and shafts

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

Patent

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Apparatus for the excavation of subterranean tunnels

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

Patent

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Apparatus for underground tunneling

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

Patent

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Arrangement of prestressing tendons in a pressure tunnel

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

Patent

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Articulated shield tunneling machine

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

Patent

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Automatically advancing supporting and sliding form for introduc

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

Patent

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