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发明名称
DEVICE FOR MAKING HOLES IN GROUND
摘要
申请公布号
EP0273974(B1)
申请公布日期
1989.11.29
申请号
EP19860904469
申请日期
1986.04.30
申请人
INST. GORNOGO DELA SIBIRSKOGO OTDELENIA AKADEMII NAUK SSSR
发明人
KOSTYLEV, ALEXANDR DMITRIEVICH;TERSKOV, ALEXEI DANILOVICH;SKACHKOV, KONSTANTIN BORISOVICH;PLAVSKIKH, VLADIMIR DMITRIEVICH
分类号
E21B4/14;E21B7/26
主分类号
E21B4/14
代理机构
代理人
主权项
地址
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