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经营范围
发明名称
Improvements in or relating to a drill
摘要
申请公布号
GB608745(A)
申请公布日期
1948.09.20
申请号
GB19460015989
申请日期
1946.05.27
申请人
LILIAN VIOLA BLACK;JAY THOMAS BLACK;FRANKLIN GREGERY GEPFERT
发明人
分类号
B23B51/02
主分类号
B23B51/02
代理机构
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