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发明名称
摘要
申请公布号
JPH0391132(U)
申请公布日期
1991.09.17
申请号
JP19890150851U
申请日期
1989.12.29
申请人
发明人
分类号
B21C47/34;B21D43/00;B21D43/02;(IPC1-7):B21D43/02
主分类号
B21C47/34
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