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发明名称
SIMPLIFIED AERATION DEVICE
摘要
申请公布号
GB9114980(D0)
申请公布日期
1991.08.28
申请号
GB19910014980
申请日期
1991.07.11
申请人
A K & E M CAMPBELL TRUST
发明人
分类号
主分类号
代理机构
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