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发明名称
INRICHTING VOOR HET VERVAARDIGEN VAN EEN ONDERGRONDSE DOORGANG.
摘要
申请公布号
NL163297(B)
申请公布日期
1980.03.17
申请号
NL19700018707
申请日期
1970.12.23
申请人
INSTITUT GORNOGO DELA SIBIRSKOGO OTDELENIA AKADEMII NAUK SSSR, NOVOSIBIRSK, U.S.S.R.
发明人
ALEXANDR DMITRIEVICH KOSTYLEV;KONSTANTIN STEPANOVICH GURKOV;KHAIM BERKOVICH TKACH;NIKOLAI PROKHOROVICH CHEPURNOI;ALLEN TE NOVOSIBIRSK;U.S.S.R.
分类号
E21B7/06;E21B7/26;E21B7/30;E21D9/00;(IPC1-7):E21D9/04;E02F5/18
主分类号
E21B7/06
代理机构
代理人
主权项
地址
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