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经营范围
发明名称
DRILLING RIG
摘要
申请公布号
SU812917(A1)
申请公布日期
1981.03.15
申请号
SU19792742976
申请日期
1979.03.29
申请人
INST GORNOGO DELA SIBIRSKOGO OTDEL AN SSSR
发明人
TREGUBOV BORIS G,SU;TRUFAKIN NIKOLAJ E,SU;SHAPOSHNIKOV VIKTOR D,SU;KOPYTOV ALEKSANDR ,SU;KOVALEVSKIJ EVGENIJ V,SU
分类号
E21B15/00;E21B19/24;E21D9/10;(IPC1-7):E21C11/02;E21C1/00
主分类号
E21B15/00
代理机构
代理人
主权项
地址
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