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发明名称
Slow sand filter
摘要
申请公布号
GB9618937(D0)
申请公布日期
1996.10.23
申请号
GB19960018937
申请日期
1996.09.11
申请人
PRINCE, DENNIS S
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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