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发明名称
摘要
申请公布号
JPS5491437(U)
申请公布日期
1979.06.28
申请号
JP19770165787U
申请日期
1977.12.12
申请人
发明人
分类号
B21C47/30;B65H75/24;(IPC1-7):B21C47/30
主分类号
B21C47/30
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代理人
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