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发明名称
摘要
申请公布号	JPS5914007(Y2)	申请公布日期	1984.04.25
申请号	JP19810037767U	申请日期	1981.03.17
申请人		发明人
分类号	B21C23/20;B21C23/21;B21C35/00;B21C35/04;B21C35/06;(IPC1-7):B21C35/04	主分类号	B21C23/20
代理机构		代理人
主权项
地址

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