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经营范围
发明名称
Gain control circuits
摘要
申请公布号
US2213034(A)
申请公布日期
1940.08.27
申请号
US19390284584
申请日期
1939.07.15
申请人
BELL TELEPHONE LABORATORIES, INCORPORATED
发明人
BARNEY HAROLD L.;BJORNSON BJORN G.;CURTIS AUSTEN M.
分类号
H04B3/06;H04B3/20
主分类号
H04B3/06
代理机构
代理人
主权项
地址
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