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发明名称
Multiplex high frequency signaling
摘要
申请公布号
US2231602(A)
申请公布日期
1941.02.11
申请号
US19370132146
申请日期
1937.03.20
申请人
AMERICAN TELEPHONE AND TELEGRAPH COMPANY
发明人
SOUTHWORTH GEORGE C.
分类号
H01P3/02;H01Q13/04;H04B3/52
主分类号
H01P3/02
代理机构
代理人
主权项
地址
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