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发明名称
摘要
申请公布号
JPS4522780(Y1)
申请公布日期
1970.09.08
申请号
JP19660054884U
申请日期
1966.06.09
申请人
发明人
分类号
(IPC1-7):B21D45/02
主分类号
(IPC1-7):B21D45/02
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