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

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Method and apparatus for constructing reinforced concrete walls

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

Patent

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Method and apparatus for supporting the wall of an upwardly exca

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

Patent

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Method and device for installing a shaft lining in shafts throug

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

Patent

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Method and machine for constructing shafts

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

Patent

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Method and system for lining shafts

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

Patent

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Method of installing a liner in a large diameter borehole

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

Patent

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Method of lining a vertical mine shaft with concrete

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

Patent

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Mine shaft guide system

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

Patent

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Mine shaft liner

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

Patent

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Mineshaft closures

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

Patent

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