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发明名称
摘要
申请公布号	JPH03120712(U)	申请公布日期	1991.12.11
申请号	JP19900011731U	申请日期	1990.02.08
申请人		发明人
分类号	E04D3/40;(IPC1-7):E04D3/40	主分类号	E04D3/40
代理机构		代理人
主权项
地址

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