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发明名称
Дриллометр для вращательного бурения
摘要
申请公布号
SU24364(A1)
申请公布日期
1931.12.31
申请号
SUD24364
申请日期
1930.11.02
申请人
BEREZOVSKIJ N.E.
发明人
BEREZOVSKIJ N.E.
分类号
E21B19/08
主分类号
E21B19/08
代理机构
代理人
主权项
地址
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