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Gewerkschaft Eisenhutte Westfalia GmbH
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Gewerkschaft Eisenhutte Westfalia GmbH
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Publication of FR1198251ApublicationCriticalpatent/FR1198251A/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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FR1198251D1957-07-151958-06-16Outil en forme de rabot pour l'abatage et le chargement du charbon, utilisable notamment dans les mines
ExpiredFR1198251A
(fr)
Soutènement déplaçable à la suite des machines d'abatage, utilisable notamment dans les mines de charbon ou dans les exploitations minières analogues