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发明名称
Electrical heating device
摘要
申请公布号
US2000455(A)
申请公布日期
1935.05.07
申请号
US19310533126
申请日期
1931.04.27
申请人
CHELVA HEAT INC.
发明人
RALSTON LOUIS T. M.;BOTTSFORD EDWARD D.
分类号
F24H7/02
主分类号
F24H7/02
代理机构
代理人
主权项
地址
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