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发明名称
Air heater
摘要
申请公布号
US1869534(A)
申请公布日期
1932.08.02
申请号
US19290359902
申请日期
1929.05.02
申请人
YOUNG FRED M
发明人
YOUNG FRED M.
分类号
F28D1/02
主分类号
F28D1/02
代理机构
代理人
主权项
地址
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