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发明名称
Electrical device
摘要
申请公布号
US2159937(A)
申请公布日期
1939.05.23
申请号
US19360081004
申请日期
1936.05.21
申请人
RADIO CORPORATION OF AMERICA
发明人
ZWORYKIN VLADIMIR K.
分类号
C03C3/00;C03C23/00;F16H15/50;H01Q3/44;H01Q15/02;H03C7/02;H03L7/26
主分类号
C03C3/00
代理机构
代理人
主权项
地址
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