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发明名称
摘要
申请公布号	JPS5250210(Y2)	申请公布日期	1977.11.15
申请号	JP19750116815U	申请日期	1975.08.25
申请人		发明人
分类号	B21D19/08;B21D5/00;B21D19/00;B21D19/12;E04C2/08;(IPC1-7):B21D5/00	主分类号	B21D19/08
代理机构		代理人
主权项
地址

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