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发明名称
BIOLOGICAL SEWAGE-TREATMENT PLANT
摘要
申请公布号
PL121880(B1)
申请公布日期
1982.06.30
申请号
PL19790219128
申请日期
1979.10.19
申请人
发明人
分类号
C02F;C02F3/12;(IPC1-7):02F3/12
主分类号
C02F
代理机构
代理人
主权项
地址
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