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发明名称
摘要
申请公布号	JPH0561225(U)	申请公布日期	1993.08.13
申请号	JP19920001490U	申请日期	1992.01.20
申请人		发明人
分类号	E02D3/12;E21B3/02;(IPC1-7):E02D3/12	主分类号	E02D3/12
代理机构		代理人
主权项
地址

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