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发明名称
摘要
申请公布号	JPS6245784(Y2)	申请公布日期	1987.12.08
申请号	JP19800065799U	申请日期	1980.05.14
申请人		发明人
分类号	B21D55/00;B21D37/04;B21D43/05;B21D43/18;B21D45/04;B30B15/02;B30B15/30;(IPC1-7):B21D43/18	主分类号	B21D55/00
代理机构		代理人
主权项
地址

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