4. Hydraulic and earth engineering
  5. Underground passageway, e.g., tunnel
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Silos and methods of burying same

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

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Sprayable mining liner

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

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Submerged tunnel and a method of and means for constructing a su

Hydraulic and earth engineering – Underground passageway – e.g. – tunnel – Subaqueous
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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System and method for transmitting and calculating data in shiel

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

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System and process for relining sewerage pipe sections

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

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System for articulably bearing a prefabricated structural...

Hydraulic and earth engineering – Underground passageway – e.g. – tunnel – Sectional
Reexamination Certificate

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System for sealing barrier constructions in subterranean galleri

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

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