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发明名称
摘要
申请公布号
JPS4617810(Y1)
申请公布日期
1971.06.21
申请号
JP19680086867U
申请日期
1968.10.07
申请人
发明人
分类号
(IPC1-7):B21D19/00
主分类号
(IPC1-7):B21D19/00
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