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Houilleres du Bassin du Nord et du Pas de Calais
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Houilleres du Bassin du Nord et du Pas de Calais
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Publication of FR1140936ApublicationCriticalpatent/FR1140936A/fr
E21C25/00—Cutting machines, i.e. for making slits approximately parallel or perpendicular to the seam
E21C25/56—Slitting by cutter cables or cutter chains or by tools drawn along the working face by cables or the like, in each case guided parallel to the face, e.g. by a conveyor or by a guide parallel to a conveyor
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FR1140936D1956-01-031956-01-03Perfectionnements aux machines abatteuses-chargeuses
ExpiredFR1140936A
(fr)