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发明名称
Air circulating and clarifying unit
摘要
申请公布号
US1819498(A)
申请公布日期
1931.08.18
申请号
US19290387647
申请日期
1929.08.22
申请人
THE A. I. ROOT COMPANY
发明人
COLE JAMES D.
分类号
F24F3/16
主分类号
F24F3/16
代理机构
代理人
主权项
地址
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