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发明名称
Verfahren zur Herstellung untertaegiger Hohl-raeume in Braunkohlenfloezen
摘要
申请公布号
DE1169401(B)
申请公布日期
1964.05.06
申请号
DE1962V022391
申请日期
1962.04.21
申请人
VEB KOMBINAT SCHWARZE PUMPE
发明人
STRZODKA DR.-ING. KLAUS
分类号
E21F5/00
主分类号
E21F5/00
代理机构
代理人
主权项
地址
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