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发明名称
摘要
申请公布号
JPS527499(Y1)
申请公布日期
1977.02.17
申请号
JP19700032767U
申请日期
1970.04.07
申请人
发明人
分类号
B21D51/26;B21D51/00;(IPC1-7):B21D51/00
主分类号
B21D51/26
代理机构
代理人
主权项
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