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发明名称
摘要
申请公布号
JPS563066(Y2)
申请公布日期
1981.01.23
申请号
JP19760034535U
申请日期
1976.03.24
申请人
发明人
分类号
B21C47/34;B21C49/00;B21D43/00;B21D43/02;B30B15/30;(IPC1-7):B21D43/00
主分类号
B21C47/34
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代理人
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