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发明名称
摘要
申请公布号	SU562326(A1)	申请公布日期	1977.06.25
申请号	SU19762327438	申请日期	1976.03.01
申请人		发明人
分类号	B21B27/02;(IPC1-7):B21B27/02	主分类号	B21B27/02
代理机构		代理人
主权项
地址

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