,申请号AU19690058912-传众专利搜索

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发明名称
摘要
申请公布号	AU5891269(A)	申请公布日期	1971.02.04
申请号	AU19690058912	申请日期	1969.07.31
申请人		发明人
分类号	E21B4/14;E21B21/00	主分类号	E21B4/14
代理机构		代理人
主权项
地址

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