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发明名称
摘要
申请公布号	SU365076(A3)	申请公布日期	1972.12.28
申请号	SU19701600649	申请日期	1970.12.24
申请人		发明人
分类号	E21D9/06;E21D11/10;(IPC1-7):E01G3/02	主分类号	E21D9/06
代理机构		代理人
主权项
地址

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