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发明名称
Electric heater
摘要
申请公布号
US2022453(A)
申请公布日期
1935.11.26
申请号
US19290393466
申请日期
1929.09.18
申请人
FRANKLIN BALL JOSEPH
发明人
BALL JOSEPH FRANKLIN
分类号
H05B3/00
主分类号
H05B3/00
代理机构
代理人
主权项
地址
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