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发明名称
摘要
申请公布号
JPS52136934(U)
申请公布日期
1977.10.18
申请号
JP19760045398U
申请日期
1976.04.14
申请人
发明人
分类号
B21D9/00;B21D9/01;(IPC1-7):B21D9/01
主分类号
B21D9/00
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代理人
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