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经营范围
发明名称
Electronic amplifier
摘要
申请公布号
US2742588(A)
申请公布日期
1956.04.17
申请号
US19500137315
申请日期
1950.01.07
申请人
BELL TELEPHONE LABORATORIES, INCORPORATED
发明人
HOLLENBERG ARTHUR V.
分类号
H01J23/02
主分类号
H01J23/02
代理机构
代理人
主权项
地址
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