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经营范围
发明名称
Threading tool
摘要
申请公布号
US2253491(A)
申请公布日期
1941.08.26
申请号
US19400317687
申请日期
1940.02.07
申请人
BAKEWELL HARDING F
发明人
BAKEWELL HARDING F.
分类号
B23G1/26
主分类号
B23G1/26
代理机构
代理人
主权项
地址
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