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发明名称
VACUUM DRAINAGE SYSTEM
摘要
申请公布号
SU1663111(A1)
申请公布日期
1991.07.15
申请号
SU19894683119
申请日期
1989.04.24
申请人
VOLZHSKIJ NII GIDROTEKHNIKI MELIORATSII
发明人
OVCHAROV VIKTOR A,SU
分类号
E02B11/00
主分类号
E02B11/00
代理机构
代理人
主权项
地址
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