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发明名称
Improvement in screw threading dies
摘要
申请公布号
GB330767(A)
申请公布日期
1930.06.19
申请号
GB19290018157
申请日期
1929.06.13
申请人
THE NATIONAL ACME COMPANY
发明人
分类号
B23G5/12
主分类号
B23G5/12
代理机构
代理人
主权项
地址
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