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发明名称
HYDROMECHANICAL BIT FOR DRILLING WELLS
摘要
申请公布号
SU1162933(A1)
申请公布日期
1985.06.23
申请号
SU19833683405
申请日期
1983.12.28
申请人
DO NI UGOLNYJ INSTITUT
发明人
ALEJNIKOV ALEKSANDR A,SU;TSYBULKO VALERIJ V,SU;PERESADA PETR M,SU;STORCHAK IVAN I,SU
分类号
E21B7/18;E21B10/18;(IPC1-7):E21B7/18
主分类号
E21B7/18
代理机构
代理人
主权项
地址
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