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发明名称
METHOD OF COUNTER-SEEPAGE SCREEN
摘要
申请公布号
SU1476044(A2)
申请公布日期
1989.04.30
申请号
SU19874324495
申请日期
1987.09.21
申请人
N-PROIZV OB "PROMTEKHKOMPLEKS"
发明人
TANKLEVSKIJ MIKHAIL M,SU;TANKLEVSKIJ ALEKSANDR M,SU
分类号
E02B3/16;E02B13/00
主分类号
E02B3/16
代理机构
代理人
主权项
地址
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