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发明名称
摘要
申请公布号
JPS4862327(U)
申请公布日期
1973.08.08
申请号
JP19710110100U
申请日期
1971.11.24
申请人
发明人
分类号
B21B39/16;(IPC1-7):B21B39/16
主分类号
B21B39/16
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代理人
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地址
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