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发明名称
APPARATUS FOR DRILLING BOREHOLES
摘要
申请公布号
SU1751288(A1)
申请公布日期
1992.07.30
申请号
SU19904850296
申请日期
1990.07.10
申请人
V PROEKTNO-IZYSKATELSKOE NI OB "GIDROPROEKT" IM.S.YA.ZHUKA
发明人
SKVORTSOV VSEVOLOD F,SU;VODOPYAN VLADIMIR K,SU;GOLOVKO ANATOLIJ F,SU;KONDRATYUK LYUDMILA I,SU;DAKHNOVSKIJ OLEG G,SU;GALENKIN NIKOLAJ N,SU
分类号
E21B7/02;E21B7/00;E21B7/24
主分类号
E21B7/02
代理机构
代理人
主权项
地址
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