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经营范围
发明名称
Improvements in screw threading taps
摘要
申请公布号
GB544463(A)
申请公布日期
1942.04.14
申请号
GB19410001072
申请日期
1941.01.27
申请人
THE NATIONAL ACME COMPANY
发明人
分类号
B23G1/22
主分类号
B23G1/22
代理机构
代理人
主权项
地址
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