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Gutehoffnungshutte Oberhausen AG
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Gutehoffnungshutte Oberhausen AG
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Application filed by Gutehoffnungshutte Oberhausen AGfiledCriticalGutehoffnungshutte Oberhausen AG
Application grantedgrantedCritical
Publication of FR1025194ApublicationCriticalpatent/FR1025194A/fr
E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
E21D17/00—Caps for supporting mine roofs
E21D17/02—Cantilever extension or similar protecting devices
E21D17/08—Cap joints for obtaining a coal-face free of pit-props
E21D17/086—Cap joints for obtaining a coal-face free of pit-props or articulated type
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Engineering & Computer Science
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Mining & Mineral Resources
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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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Bridges Or Land Bridges
(AREA)
FR1025194D1950-03-091950-09-27Procédé et dispositif pour la fixation de rallonges en porte-à-faux dans les soutè nements de mine
ExpiredFR1025194A
(fr)