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发明名称
Electric amplifying system
摘要
申请公布号
US1985945(A)
申请公布日期
1935.01.01
申请号
US19290332614
申请日期
1929.01.15
申请人
RADIO CORPORATION OF AMERICA
发明人
MIESSNER BENJAMIN F.
分类号
H04B1/16
主分类号
H04B1/16
代理机构
代理人
主权项
地址
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