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发明名称
Channel aerator
摘要
申请公布号
GB9907753(D0)
申请公布日期
1999.05.26
申请号
GB19990007753
申请日期
1999.04.06
申请人
CAMPBELL, K C
发明人
分类号
主分类号
代理机构
代理人
主权项
地址
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