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发明名称
Heat pump operated system for house heating
摘要
申请公布号
US2780415(A)
申请公布日期
1957.02.05
申请号
US19520273124
申请日期
1952.02.23
申请人
GAY FRAZER W
发明人
GAY FRAZER W.
分类号
F24D11/02;F24J3/08;F25B30/02;F25B30/06;F28D15/02
主分类号
F24D11/02
代理机构
代理人
主权项
地址
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