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发明名称
Ausbau fuer die steile Lagerung im Bergbau
摘要
申请公布号
DE1082213(B)
申请公布日期
1960.05.25
申请号
DE1955L023031
申请日期
1955.09.24
申请人
DR.-ING. HERMANN LUTZ
发明人
LUTZ DR.-ING. HERMANN
分类号
E21D15/00
主分类号
E21D15/00
代理机构
代理人
主权项
地址
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