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发明名称
UNTERTAGEABBAUVERFAHREN MIT ABWAERTS GEFUEHRTEM STOSSBAU UND ZUBRUCHWERFEN DES HANGENDEN, SOWIE MASCHINELLE EINRICHTUNG ZUR DURCHFUEHRUNG DES VERFAHRENS.
摘要
申请公布号
DE3772866(D1)
申请公布日期
1991.10.17
申请号
DE19873772866
申请日期
1987.06.01
申请人
CHARBONNAGES DE FRANCE
发明人
MARION RENE ANDRE
分类号
E21C41/00;E21C41/16;E21C41/18;E21D19/02;E21D23/00;(IPC1-7):E21C41/00
主分类号
E21C41/00
代理机构
代理人
主权项
地址
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