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发明名称
Verfahren und Vorrichtung fuer den Strebabbau von Kohle
摘要
申请公布号
DE1961158(A1)
申请公布日期
1970.07.02
申请号
DE19691961158
申请日期
1969.12.05
申请人
GLOWNY INSTYTUT GORNICTWA
发明人
RABSZTYN,JERZY
分类号
E21C27/14;E21C37/08;E21C41/18
主分类号
E21C27/14
代理机构
代理人
主权项
地址
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