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发明名称
摘要
申请公布号
JPS4527079(Y1)
申请公布日期
1970.10.20
申请号
JP19670030372U
申请日期
1967.04.13
申请人
发明人
分类号
(IPC1-7):B21B39/22
主分类号
(IPC1-7):B21B39/22
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代理人
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