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发明名称
Grubenstempel
摘要
申请公布号
DE872192(C)
申请公布日期
1953.03.30
申请号
DE1949M000771
申请日期
1949.12.03
申请人
MAVOR & COULSON LIMITED;TOWLER JOHN MAURICE
发明人
TOWLER JOHN MAURICE
分类号
E21D15/44;E21D15/46
主分类号
E21D15/44
代理机构
代理人
主权项
地址
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