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发明名称
摘要
申请公布号	JPS56126921(U)	申请公布日期	1981.09.26
申请号	JP19800023638U	申请日期	1980.02.27
申请人		发明人
分类号	B21D39/02;B21D19/08;B21D19/12;(IPC1-7):B21D19/08	主分类号	B21D39/02
代理机构		代理人
主权项
地址

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