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发明名称
摘要
申请公布号
JPS6438121(U)
申请公布日期
1989.03.07
申请号
JP19870130919U
申请日期
1987.08.28
申请人
发明人
分类号
B21D19/08;B21D39/02;(IPC1-7):B21D39/02
主分类号
B21D19/08
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