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发明名称
FLOATING DEVICE FOR AERATION OF LIQUIDS,ESPECIALLY SEWAGE,AND GUIDING SUCH A DEVICE
摘要
申请公布号
PL261238(A1)
申请公布日期
1988.06.09
申请号
PL19860261238
申请日期
1986.08.29
申请人
发明人
分类号
C02F;C02F1/74;(IPC1-7):C02F/
主分类号
C02F
代理机构
代理人
主权项
地址
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