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法人/股东/高管

发明名称
摘要
申请公布号	JPS566547(Y2)	申请公布日期	1981.02.13
申请号	JP19770154537U	申请日期	1977.11.17
申请人		发明人
分类号	E21B7/00;E02F3/06;E21B11/00;(IPC1-7):E21B11/00	主分类号	E21B7/00
代理机构		代理人
主权项
地址

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