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Bennes Marrel SA
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Bennes Marrel SA
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Application filed by Bennes Marrel SAfiledCriticalBennes Marrel SA
Priority to FR47192ApriorityCriticalpatent/FR1491280A/fr
Application grantedgrantedCritical
Publication of FR1491280ApublicationCriticalpatent/FR1491280A/fr
E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
E21D23/08—Advancing mechanisms
E21D23/081—Advancing mechanisms forming parts of the roof supports
E21D23/085—Advancing mechanisms forming parts of the roof supports acting on a conveyor or a guide for the mining machine
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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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FR47192A1966-04-221966-04-22Perfectionnements aux dispositifs utilisés dans les mines pour déplacer les piles de soutènement marchant
ExpiredFR1491280A
(fr)