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发明名称
摘要
申请公布号
JPH0357449(U)
申请公布日期
1991.06.03
申请号
JP19890118171U
申请日期
1989.10.06
申请人
发明人
分类号
B21D22/14;B21D53/30;(IPC1-7):B21D53/30
主分类号
B21D22/14
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