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发明名称
METHOD AND APPARATUS FOR EXECUTING TUNNEL CEILINGS WITH RECESSES
摘要
申请公布号
PL102391(B1)
申请公布日期
1979.03.31
申请号
PL19760194082
申请日期
1976.11.30
申请人
发明人
分类号
E21D11/14;(IPC1-7):E01G4/04
主分类号
E21D11/14
代理机构
代理人
主权项
地址
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