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经营范围
发明名称
Ultrahigh-frequency converter
摘要
申请公布号
US2653228(A)
申请公布日期
1953.09.22
申请号
US19510242161
申请日期
1951.08.16
申请人
RADIO CORPORATION OF AMERICA
发明人
PAN WEN YUAN
分类号
H03D7/02
主分类号
H03D7/02
代理机构
代理人
主权项
地址
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