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发明名称
摘要
申请公布号
JPS5221486(U)
申请公布日期
1977.02.15
申请号
JP19750107889U
申请日期
1975.08.05
申请人
发明人
分类号
B26F1/02;B21D28/32;B26F1/12;(IPC1-7):B21D28/32
主分类号
B26F1/02
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代理人
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