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发明名称
摘要
申请公布号
JPS4635998(Y1)
申请公布日期
1971.12.10
申请号
JP19680091869U
申请日期
1968.10.21
申请人
发明人
分类号
(IPC1-7):B21F1/00;B21D7/00;H05K3/30;H05K13/00
主分类号
(IPC1-7):B21F1/00
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