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发明名称
Колонковое электрическое сверло для бурения шпуров вращательным способом
摘要
申请公布号
SU114623(A1)
申请公布日期
1958.11.30
申请号
SU19570587656
申请日期
1957.12.12
申请人
TIKHONRUK V.F.
发明人
TIKHONRUK V.F.
分类号
E21B3/00;E21B19/086
主分类号
E21B3/00
代理机构
代理人
主权项
地址
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