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发明名称
摘要
申请公布号
JPS5833122(U)
申请公布日期
1983.03.04
申请号
JP19810124820U
申请日期
1981.08.25
申请人
发明人
分类号
B21D28/32;B21D28/34;(IPC1-7):B21D28/34
主分类号
B21D28/32
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代理人
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