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发明名称
VARIABLE RADIO GAIN AMPLIFIER
摘要
申请公布号
CA412949(A)
申请公布日期
1943.06.01
申请号
CAD412949
申请日期
申请人
PHILCO CORPORATION
发明人
DAVID BEACH SMITH
分类号
主分类号
代理机构
代理人
主权项
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