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发明名称
摘要
申请公布号	JPS5268428(U)	申请公布日期	1977.05.20
申请号	JP19750156074U	申请日期	1975.11.15
申请人		发明人
分类号	B21B37/68;B21B37/00;B21B37/18;B21B37/58;(IPC1-7):B21B37/08	主分类号	B21B37/68
代理机构		代理人
主权项
地址

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