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

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Form handling system

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

Patent

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Forming a passageway through the ground

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

Patent

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Guidance system and method for keeping a tunnel boring machine c

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

Patent

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Horizontal drilling method

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

Patent

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Horizontal drilling method and apparatus

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

Patent

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Hydraulic control means

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

Patent

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Hydraulic control means

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

Patent

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Hydraulic control systems for and methods of controlling the ope

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

Patent

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Hydraulically powered door and systems for operating same in...

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

Reexamination Certificate

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Insulation of tunnel linings

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

Patent

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Knife shield

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

Patent

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Knife shield driving device and method for the excavating and/or

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

Patent

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Lining tunnel wall made by shield type tunnel excavator

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

Patent

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

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

Reexamination Certificate

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Mechanism and method for continuously constructing reinforced co

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

Patent

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Method and apparatus for advancing cylindrical bodies undergroun

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

Patent

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Method and apparatus for advancing cylindrical bodies undergroun

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

Patent

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Method and apparatus for constructing underground structure

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

Patent

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Method and apparatus for continuous production of quick-setting

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

Patent

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Method and apparatus for continuously boring and lining tunnels

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

Patent

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