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法人/股东/高管

发明名称
摘要
申请公布号	SU406008(A1)	申请公布日期	1973.11.05
申请号	SU19711672864	申请日期	1971.06.21
申请人		发明人
分类号	E21C25/16;E21C27/14;(IPC1-7):E21C25/16	主分类号	E21C25/16
代理机构		代理人
主权项
地址

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