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发明名称
摘要
申请公布号
JPS52100841(U)
申请公布日期
1977.07.30
申请号
JP19760008634U
申请日期
1976.01.30
申请人
发明人
分类号
B21D5/04;B21D5/00;(IPC1-7):B21D5/04
主分类号
B21D5/04
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代理人
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