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发明名称
Improvements relating to the punching of metal members such as sheets, joists or the like
摘要
申请公布号
GB920443(A)
申请公布日期
1963.03.06
申请号
GB19580032679
申请日期
1958.10.14
申请人
AUSTEN ROBERT HIGGIN
发明人
分类号
B21D28/36
主分类号
B21D28/36
代理机构
代理人
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