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发明名称
DEVICE FOR THERMOMECHANICAL DRILLING OF BOREHOLES
摘要
申请公布号
SU1032837(A1)
申请公布日期
1986.08.15
申请号
SU19813373919
申请日期
1981.12.29
申请人
SP K BYURO SAMOKHODNOGO GORNOGO OBORUDOVANIYA
发明人
DERBENEVA O.L.,SU;DUGARTSYRENOV A.V.,SU;LARIN O.R.,SU;CHUGUNOV I.V.,SU
分类号
E21B7/18;E21B7/14
主分类号
E21B7/18
代理机构
代理人
主权项
地址
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