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发明名称
摘要
申请公布号
JPS5013229(B1)
申请公布日期
1975.05.17
申请号
JP19690013699
申请日期
1969.02.25
申请人
发明人
分类号
B21B13/22;B21J7/18;(IPC1-7):B21J7/14
主分类号
B21B13/22
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代理人
主权项
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