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发明名称
SEALING UNIT FOR ASCENDING WEEP HOLE OPENING
摘要
申请公布号
RU2047773(C1)
申请公布日期
1995.11.10
申请号
SU19925063600
申请日期
1992.08.04
申请人
SPETSIALIZIROVANNOE GORNOE STROITELNO-TEKHNOLOGICHESKOE UPRAVLENIE NAUCHNO-PROIZVODSTVENNOGO OB"EDINENIYA "VIOGEM"
发明人
KLIMENTOV MIKHAIL N;TROYANOV ANATOLIJ M
分类号
E21D3/00;(IPC1-7):E21D3/00
主分类号
E21D3/00
代理机构
代理人
主权项
地址
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