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发明名称
METHOD OF SINKING A VERTICAL WORKING IN FROZEN SOILS
摘要
申请公布号
SU831981(A1)
申请公布日期
1981.05.23
申请号
SU19782686993
申请日期
1978.11.22
申请人
SEVERNOE OTDEL NII OSNOVANIJ PODZEMNYKH SOORUZHENIJ IM. N.M.GERSEVANOVA
发明人
GAMILOVSKIJ VLADIMIR K,SU;DESYAK VLADIMIR S,SU
分类号
E21D1/00;(IPC1-7):E21D1/00
主分类号
E21D1/00
代理机构
代理人
主权项
地址
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