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发明名称
摘要
申请公布号	RO59521(A2)	申请公布日期	1976.02.15
申请号	RO19710066675	申请日期	1971.04.24
申请人		发明人
分类号	B21C37/00;(IPC1-7):B21C37/00	主分类号	B21C37/00
代理机构		代理人
主权项
地址

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