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发明名称
摘要
申请公布号
JPS57110238(U)
申请公布日期
1982.07.07
申请号
JP19800187799U
申请日期
1980.12.27
申请人
发明人
分类号
B21D31/04;B21F27/00;E04G5/08;(IPC1-7):E04G5/08
主分类号
B21D31/04
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