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发明名称
PUNCH ASSEMBLY
摘要
申请公布号
GB1471184(A)
申请公布日期
1977.04.21
申请号
GB19740023825
申请日期
1974.05.29
申请人
YUAN HO LEE
发明人
分类号
B21D28/34;B21D37/04;(IPC1-7):B21D37/06
主分类号
B21D28/34
代理机构
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