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

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Control method and control equipment for drilling apparatus

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

Patent

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Controlling apparatus for excavator

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

Patent

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Device for opening and supporting a headway

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

Patent

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Direction correcting device for shield tunnelling machine

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

Patent

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Drill head for a microtunnelling apparatus

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

Reexamination Certificate

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Drilling apparatus and method for its control

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

Patent

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Drive shield

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

Patent

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Drive shield

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

Patent

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Drive shields for tunnel-driving apparatus

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

Patent

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Earth pressure shield

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

Patent

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Earth pressure shield

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

Patent

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Earth pressure system shield process

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

Patent

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Easily-cuttable tunnel segment structure

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

Reexamination Certificate

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Elongated underground construction having a uniform section and

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

Patent

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Excavated earth and sand transporting apparatus for use in a shi

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

Patent

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Excavating machine for tunnels and galleries

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

Patent

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Excavation controlling method in hydraulic shield tunnelling

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

Patent

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Foaming composition

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

Reexamination Certificate

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Form assembly for making covering wall of tunnel made by shield

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

Patent

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Form for concrete-placement tunnel lining

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

Patent

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