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发明名称
Boring bar
摘要
申请公布号
US1814921(A)
申请公布日期
1931.07.14
申请号
US19260138741
申请日期
1926.09.30
申请人
HARTWELL FLOYD S
发明人
HARTWELL FLOYD S.
分类号
B23B29/034
主分类号
B23B29/034
代理机构
代理人
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