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经营范围
发明名称
WATER AERATION SYSTEM
摘要
申请公布号
PL262963(A1)
申请公布日期
1987.07.27
申请号
PL19860262963
申请日期
1986.12.11
申请人
发明人
分类号
C02F;C02F1/64;(IPC1-7):C02F/
主分类号
C02F
代理机构
代理人
主权项
地址
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