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发明名称
DEVICE FOR DRILLING CONJUGATED WELLS
摘要
申请公布号
SU1710691(A1)
申请公布日期
1992.02.07
申请号
SU19894769756
申请日期
1989.12.14
申请人
VOSTOCHNYJ NI GORNORUDNYJ INSTITUT
发明人
SEDKO ANATOLIJ P,SU;NAGAEV KHALIL KH,SU
分类号
E21B7/28
主分类号
E21B7/28
代理机构
代理人
主权项
地址
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