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发明名称
摘要
申请公布号	BE712923(A)	申请公布日期	1968.09.30
申请号	BED712923	申请日期	1968.03.29
申请人		发明人
分类号	B21D1/05	主分类号	B21D1/05
代理机构		代理人
主权项
地址

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