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发明名称
PNEUMATISK STOETANORDNING FOER BORRNING AV HAOL I JORDEN
摘要
申请公布号
FI780080(A)
申请公布日期
1979.07.12
申请号
FI19780000080
申请日期
1978.01.11
申请人
INST GORNOGO DELA SIBIRSKOGO OTDELENIA AKADEMII NAUK SSSR
发明人
KOSTYLEV ALEXANDR DMITRIEVICH;CHEPURNOI NIKOLAI PROKHOROVICH;PLAVSKIKH VLADIMIR DMITRIEVICH;CHEREDNIKOV EVGENY NIKOLAEVICH
分类号
E02D17/00;E21B;E21B1/00;(IPC1-7):E21B/
主分类号
E02D17/00
代理机构
代理人
主权项
地址
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