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发明名称
Reversible control for hot and cold air in furnaces
摘要
申请公布号
US1891796(A)
申请公布日期
1932.12.20
申请号
US19310533913
申请日期
1931.04.30
申请人
MARY JANE CARDER
发明人
CARDER ALBERT M.
分类号
F24H9/20
主分类号
F24H9/20
代理机构
代理人
主权项
地址
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