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发明名称
摘要
申请公布号	JPS5241219(B1)	申请公布日期	1977.10.17
申请号	JP19710021060	申请日期	1971.04.07
申请人		发明人
分类号	B21F23/00;(IPC1-7):B21F23/00	主分类号	B21F23/00
代理机构		代理人
主权项
地址

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