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经营范围
发明名称
Radiofrequency amplifier
摘要
申请公布号
US1840350(A)
申请公布日期
1932.01.12
申请号
US19270228722
申请日期
1927.10.26
申请人
BELL TELEPHONE LABORATORIES, INCORPORATED
发明人
CECCARINI OLINDO O.
分类号
H03F1/36
主分类号
H03F1/36
代理机构
代理人
主权项
地址
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