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发明名称
Drill stop
摘要
申请公布号
US2978931(A)
申请公布日期
1961.04.11
申请号
US19590838928
申请日期
1959.09.09
申请人
BRODEN ALBERT W
发明人
BRODEN ALBERT W.
分类号
B23B47/18;B23B49/00
主分类号
B23B47/18
代理机构
代理人
主权项
地址
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