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发明名称
摘要
申请公布号	JPH0412546(U)	申请公布日期	1992.01.31
申请号	JP19900051703U	申请日期	1990.05.17
申请人		发明人
分类号	E02D17/20;(IPC1-7):E02D17/20	主分类号	E02D17/20
代理机构		代理人
主权项
地址

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