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发明名称
GRUBENAUSBAURAHMEN
摘要
申请公布号
DE2337390(B2)
申请公布日期
1977.11.10
申请号
DE19732337390
申请日期
1973.07.23
申请人
发明人
分类号
E21D23/00;(IPC1-7):E21D23/26;E21D15/51
主分类号
E21D23/00
代理机构
代理人
主权项
地址
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