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发明名称
摘要
申请公布号
JPH0614883(Y2)
申请公布日期
1994.04.20
申请号
JP19900052672U
申请日期
1990.05.22
申请人
发明人
分类号
B21B39/14;(IPC1-7):B21B39/14
主分类号
B21B39/14
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代理人
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