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发明名称
Double heterodyne signal receiving system
摘要
申请公布号
US2245385(A)
申请公布日期
1941.06.10
申请号
US19400321539
申请日期
1940.02.29
申请人
RADIO CORPORATION
发明人
CARLSON WENDELL L.
分类号
H03D7/14;H03D7/16;H04B1/26
主分类号
H03D7/14
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代理人
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