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发明名称
Variable gain amplifier
摘要
申请公布号
US2022972(A)
申请公布日期
1935.12.03
申请号
US19340740751
申请日期
1934.08.21
申请人
BELL TELEPHONE LABORATORIES, INCORPORATED
发明人
NEBEL CHARLES N.
分类号
H03G3/08;H03G9/06
主分类号
H03G3/08
代理机构
代理人
主权项
地址
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