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Priority to DE19722212993priorityCriticalpatent/DE2212993C2/de
Publication of DE2212993A1publicationCriticalpatent/DE2212993A1/de
Publication of DE2212993B1publicationCriticalpatent/DE2212993B1/de
Application grantedgrantedCritical
Publication of DE2212993C2publicationCriticalpatent/DE2212993C2/de
E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
E21D11/14—Lining predominantly with metal
E21D11/34—Joints between vertical props and horizontal top bars
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Engineering & Computer Science
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Mining & Mineral Resources
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Architecture
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Civil Engineering
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Structural Engineering
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Life Sciences & Earth Sciences
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General Life Sciences & Earth Sciences
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Geochemistry & Mineralogy
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Geology
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Footwear And Its Accessory, Manufacturing Method And Apparatuses
(AREA)
DE197222129931972-03-171972-03-17Sicherheitskappschuh fur den Tür Stockausbau aus Stahlprofilen im Unter tagebetrieb
ExpiredDE2212993C2
(de)