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发明名称
摘要
申请公布号
JPS4220275(Y1)
申请公布日期
1967.11.25
申请号
JP19650051585U
申请日期
1965.06.24
申请人
发明人
分类号
B21D37/10;(IPC1-7):B21D37/10
主分类号
B21D37/10
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代理人
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