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发明名称
Grubenstempel
摘要
申请公布号
DE800076(C)
申请公布日期
1950.09.01
申请号
DED800076
申请日期
1948.10.02
申请人
MANNESMANNROEHREN-WERKE
发明人
ILSE ALBERT
分类号
E21D15/22;E21D15/24
主分类号
E21D15/22
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代理人
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