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经营范围
发明名称
Thermionic amplifier
摘要
申请公布号
US2067048(A)
申请公布日期
1937.01.05
申请号
US19280282089
申请日期
1928.06.01
申请人
RADIO CORPORATION
发明人
GILL ERNEST WALTER BRUDENELL;DONALDSON ROBERT HOPE
分类号
H03F1/16
主分类号
H03F1/16
代理机构
代理人
主权项
地址
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