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发明名称
摘要
申请公布号	SU366023(A1)	申请公布日期	1973.01.16
申请号	SU19711688665	申请日期	1971.08.16
申请人		发明人
分类号	B21D15/06;(IPC1-7):B21D15/06	主分类号	B21D15/06
代理机构		代理人
主权项
地址

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