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

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Sardine-bone construction method for large-section tunnel

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

Reexamination Certificate

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Sealing means for the drive members of drive shields

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

Patent

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Seals for tunnelling shields

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

Patent

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Shield apparatus for use in tunnelling

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

Patent

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Shield driving machine

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

Patent

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Shield excavator

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

Patent

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Shield for constructing tunnels with in-situ formed concrete lin

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

Patent

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Shield for tunneling and mining

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

Patent

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Shield tail sealing

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

Patent

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Shield tunneling apparatus

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

Patent

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Shield tunneling machine

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

Patent

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Shield tunneling machine

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

Patent

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Shield tunneling machine

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

Patent

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Shield tunneling method and assembling and disassembling apparat

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

Patent

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Shield tunneling method and shield machine therefor

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

Patent

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Shield tunnelling apparatus

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

Patent

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Shield type tunneling machine

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

Patent

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Shielded tunnel excavator

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

Patent

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Shielding apparatus

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

Patent

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Subterranean connecting method for construction of shield tunnel

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

Patent

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