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发明名称
METHOD OF MAKING BOREHOLES
摘要
申请公布号
SU1559089(A1)
申请公布日期
1990.04.23
申请号
SU19874370103
申请日期
1987.11.26
申请人
POLTAVSKOE OTDEL UK NI GEOLOGORAZVEDOCHNOGO INSTITUTA
发明人
EREMEEV YURIJ A,SU;CHERNYSHEV IVAN I,SU;RYBIN YURIJ S,SU;SEMENYCHEV GERMAN A,SU;GLUSHAKOV ADOLF YA,SU
分类号
E21B7/20
主分类号
E21B7/20
代理机构
代理人
主权项
地址
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