4. Hydraulic and earth engineering
  5. Underground passageway, e.g., tunnel
  6. Boring

Otto Braach

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Earth pressure shield

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

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Earth pressure shield

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

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Excavating machine for tunnels and galleries

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

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Method of and apparatus for concrete tunnel lining

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

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Method of and apparatus for concrete tunnel lining

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

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Profile ID: LFUS-PAI-P-320920

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