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经营范围
发明名称
Expanding boring head
摘要
申请公布号
GB398915(A)
申请公布日期
1933.09.28
申请号
GB19320009144
申请日期
1932.03.30
申请人
THE O.K. TOOL COMPANY, INC.
发明人
分类号
B23D77/04
主分类号
B23D77/04
代理机构
代理人
主权项
地址
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