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发明名称
Means for and method of frequency conversion
摘要
申请公布号
US2687476(A)
申请公布日期
1954.08.24
申请号
US19490090125
申请日期
1949.04.28
申请人
RADIO PATENTS COMPANY
发明人
GUANELLA GUSTAV
分类号
H04B7/155
主分类号
H04B7/155
代理机构
代理人
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