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

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Flood isolation dam

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

Patent

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Foam blocks for construction of mine tunnel stoppings

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

Reexamination Certificate

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Foam slabs in mine tunnel stoppings

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

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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Form for making a permanent concrete mine stopping

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

Patent

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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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Formwork apparatus

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

Patent

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