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发明名称
摘要
申请公布号	JPS5885412(U)	申请公布日期	1983.06.09
申请号	JP19810181144U	申请日期	1981.12.07
申请人		发明人
分类号	B21C23/14;B21C23/16;B21C25/02;B21K3/00;B21K3/04;(IPC1-7):B21C23/16	主分类号	B21C23/14
代理机构		代理人
主权项
地址

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