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发明名称
摘要
申请公布号	JPS4979949(A)	申请公布日期	1974.08.01
申请号	JP19720123342	申请日期	1972.12.11
申请人		发明人
分类号	B21B37/38	主分类号	B21B37/38
代理机构		代理人
主权项
地址

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