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发明名称
摘要
申请公布号
JPS646981(Y2)
申请公布日期
1989.02.23
申请号
JP19830024434U
申请日期
1983.02.23
申请人
发明人
分类号
B21D1/05;B21D1/02;(IPC1-7):B21D1/05
主分类号
B21D1/05
代理机构
代理人
主权项
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