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FLOTTMANN AG
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FLOTTMANN AG
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Application filed by FLOTTMANN AGfiledCriticalFLOTTMANN AG
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Publication of FR902730ApublicationCriticalpatent/FR902730A/fr
E21C27/00—Machines which completely free the mineral from the seam
E21C27/20—Mineral freed by means not involving slitting
E21C27/46—Mineral freed by means not involving slitting by percussed planing means
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Engineering & Computer Science
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Mining & Mineral Resources
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Mechanical 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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FR902730D1943-03-091944-03-15Appareil d'extraction déplacé mécaniquement le long du front de taille pour le charbon et autres minéraux
ExpiredFR902730A
(fr)