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发明名称
Frequency conversion apparatus
摘要
申请公布号
US2695357(A)
申请公布日期
1954.11.23
申请号
US19510221860
申请日期
1951.04.19
申请人
RADIO CORPORATION OF AMERICA
发明人
DONLEY HUGH L.
分类号
H03D7/00
主分类号
H03D7/00
代理机构
代理人
主权项
地址
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