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发明名称
摘要
申请公布号
JPS6331766(Y2)
申请公布日期
1988.08.24
申请号
JP19830073313U
申请日期
1983.05.17
申请人
发明人
分类号
B21C47/08;B21C47/14;B21C47/24;(IPC1-7):B21C47/14
主分类号
B21C47/08
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