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发明名称
摘要
申请公布号
JPH02118616(U)
申请公布日期
1990.09.25
申请号
JP19890026608U
申请日期
1989.03.10
申请人
发明人
分类号
B21D22/20;B21D24/04;(IPC1-7):B21D24/04
主分类号
B21D22/20
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