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经营范围
发明名称
Heating filament circuit
摘要
申请公布号
US2346654(A)
申请公布日期
1944.04.18
申请号
US19390306029
申请日期
1939.11.24
申请人
TUNG-SOL LAMP WORKS, INC.
发明人
LEUTHOLD EDGAR J.
分类号
H01J1/13
主分类号
H01J1/13
代理机构
代理人
主权项
地址
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