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发明名称
Multichannel system
摘要
申请公布号
US2408077(A)
申请公布日期
1946.09.24
申请号
US19440551202
申请日期
1944.08.25
申请人
FEDERAL TELEPHONE AND RADIO CORPORATION
发明人
LABIN EMILE
分类号
H04J3/00;H04J3/02;H04J3/06;H04J3/16
主分类号
H04J3/00
代理机构
代理人
主权项
地址
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