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发明名称
摘要
申请公布号
JPS5233636(U)
申请公布日期
1977.03.09
申请号
JP19750120131U
申请日期
1975.08.30
申请人
发明人
分类号
B21D7/06;(IPC1-7):B21D7/06
主分类号
B21D7/06
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