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发明名称
摘要
申请公布号
JPS6340281(Y2)
申请公布日期
1988.10.21
申请号
JP19820183244U
申请日期
1982.12.02
申请人
发明人
分类号
B21D45/04;B21D28/14;B21D45/00;(IPC1-7):B21D45/00
主分类号
B21D45/04
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