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发明名称
摘要
申请公布号
JPH0391119(U)
申请公布日期
1991.09.17
申请号
JP19890147719U
申请日期
1989.12.25
申请人
发明人
分类号
B21D3/14;(IPC1-7):B21D3/14
主分类号
B21D3/14
代理机构
代理人
主权项
地址
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