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发明名称
摘要
申请公布号	JPS569034(Y2)	申请公布日期	1981.02.27
申请号	JP19740153756U	申请日期	1974.12.17
申请人		发明人
分类号	E02F3/92;E02F5/00;E21C45/00;E21C45/02;E21C47/10;(IPC1-7):E21C47/10	主分类号	E02F3/92
代理机构		代理人
主权项
地址

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