,申请号GBD1258890-传众专利搜索

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法人/股东/高管

发明名称
摘要
申请公布号	GB1258890(A)	申请公布日期	1971.12.30
申请号	GBD1258890	申请日期	1970.12.14
申请人		发明人
分类号	E21B7/04;E21B7/06;E21B7/08;E21B7/18;E21B21/10	主分类号	E21B7/04
代理机构		代理人
主权项
地址

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