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发明名称
Аппарат для сверления дыр в обсадных трубах
摘要
申请公布号
SU42524(A1)
申请公布日期
1935.04.30
申请号
SU19320117582
申请日期
1932.10.25
申请人
TSURINOV A.I.
发明人
TSURINOV A.I.
分类号
E21B29/00
主分类号
E21B29/00
代理机构
代理人
主权项
地址
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