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发明名称
摘要
申请公布号	DE2136985(A1)	申请公布日期	1972.02.10
申请号	DE19712136985	申请日期	1971.07.23
申请人		发明人
分类号	B21D11/14;B23B31/12;B23B31/14;B23P15/32;(IPC1-7):B21D11/00	主分类号	B21D11/14
代理机构		代理人
主权项
地址

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