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发明名称
Improvements in or relating to method of making socketed articles such as screws, bolts, or the like
摘要
申请公布号
GB677936(A)
申请公布日期
1952.08.27
申请号
GB19500009719
申请日期
1950.04.20
申请人
THE NATIONAL MACHINERY COMPANY
发明人
分类号
B21K1/46
主分类号
B21K1/46
代理机构
代理人
主权项
地址
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