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发明名称
摘要
申请公布号
JPS607853(Y2)
申请公布日期
1985.03.18
申请号
JP19800087920U
申请日期
1980.06.23
申请人
发明人
分类号
B21C37/08;B21C37/083;B21D5/10;B21D5/12;(IPC1-7):B21D5/10
主分类号
B21C37/08
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