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经营范围
发明名称
Electric heater
摘要
申请公布号
US2643317(A)
申请公布日期
1953.06.23
申请号
US19500143631
申请日期
1950.02.11
申请人
TUTTLE & KIFT, INC.
发明人
TUTTLE WILLIAM R.
分类号
H05B3/48
主分类号
H05B3/48
代理机构
代理人
主权项
地址
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