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发明名称
摘要
申请公布号
JPH0381227(U)
申请公布日期
1991.08.20
申请号
JP19890142190U
申请日期
1989.12.08
申请人
发明人
分类号
B21D28/14;(IPC1-7):B21D28/14
主分类号
B21D28/14
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代理人
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