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经营范围
发明名称
Signal frequency inverter
摘要
申请公布号
US2110698(A)
申请公布日期
1938.03.08
申请号
US19360105363
申请日期
1936.10.13
申请人
RADIO CORPORATION
发明人
CHARRIER GEORGE M.
分类号
H04K1/04
主分类号
H04K1/04
代理机构
代理人
主权项
地址
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