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发明名称
Oil housing for drill heads
摘要
申请公布号
US1762092(A)
申请公布日期
1930.06.03
申请号
US19270198965
申请日期
1927.06.15
申请人
THE NATIONAL AUTOMATIC TOOL COMPANY
发明人
GALLOWAY ROBERT M.
分类号
B23B39/16
主分类号
B23B39/16
代理机构
代理人
主权项
地址
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