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发明名称
CRUSHED STONE FREE DRAINAGE FOR FILTERING APPARATUS
摘要
申请公布号
SU891117(A1)
申请公布日期
1981.12.23
申请号
SU19802926246
申请日期
1980.05.16
申请人
UK G PNII KOMMUNALNYKH SOORUZHENIJ GORODOV
发明人
YARKHIN GARRI M,SU
分类号
(IPC1-7):B01D23/26
主分类号
(IPC1-7):B01D23/26
代理机构
代理人
主权项
地址
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