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经营范围
发明名称
Air purifying and circulating device
摘要
申请公布号
US2640558(A)
申请公布日期
1953.06.02
申请号
US19490106472
申请日期
1949.07.23
申请人
W. B. CONNOR ENGINEERING CORP.
发明人
DAUPHINEE GEORGE S.
分类号
F25D17/04
主分类号
F25D17/04
代理机构
代理人
主权项
地址
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