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发明名称
摘要
申请公布号
JPS63174912(U)
申请公布日期
1988.11.14
申请号
JP19870055846U
申请日期
1987.04.13
申请人
发明人
分类号
B21C1/00;B21C3/12;B29C47/12;(IPC1-7):B21C3/12
主分类号
B21C1/00
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代理人
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