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发明名称
摘要
申请公布号	JPS4112165(Y1)	申请公布日期	1966.06.08
申请号	JP19640076199U	申请日期	1964.09.29
申请人		发明人
分类号	E21C25/22;E21C29/10;(IPC1-7):E21C29/10	主分类号	E21C25/22
代理机构		代理人
主权项
地址

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