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经营范围
发明名称
METHOD OF CONSTRUCTING UNTIFILTRATION CURTAIN AROUND VERTICAL SHAFT
摘要
申请公布号
SU1564352(A1)
申请公布日期
1990.05.15
申请号
SU19874134475
申请日期
1987.10.14
申请人
SPETSIALIZIROVANNOE PROIZV GEOLOGICHESKOE OB PO TAMPONAZHNYM GEOLOGORAZVEDOCHNYM RABOTAM
发明人
KIPKO ERNEST YA,SU;POLOZOV YURIJ A,SU;BYKOV NIKOLAJ L,SU;SPICHAK YURIJ N,SU;PSHENICHNYJ YURIJ A,SU
分类号
E21D1/16
主分类号
E21D1/16
代理机构
代理人
主权项
地址
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