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发明名称
摘要
申请公布号
JPS63184621(U)
申请公布日期
1988.11.28
申请号
JP19870076310U
申请日期
1987.05.21
申请人
发明人
分类号
B21D28/00;B21D28/34;B21D37/18;(IPC1-7):B21D28/00
主分类号
B21D28/00
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代理人
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