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发明名称
摘要
申请公布号	JPS644285(Y2)	申请公布日期	1989.02.03
申请号	JP19800168707U	申请日期	1980.11.25
申请人		发明人
分类号	G21D1/00;E04F13/00;G21C13/02;G21C17/00;H02G3/22;(IPC1-7):H02G3/22	主分类号	G21D1/00
代理机构		代理人
主权项
地址

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