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发明名称
Frequency-shift radio telegraph transmitting system
摘要
申请公布号
US2424971(A)
申请公布日期
1947.08.05
申请号
US19440545934
申请日期
1944.07.21
申请人
BELL TELEPHONE LABORATORIES, INCORPORATED
发明人
DAVEY JAMES R.
分类号
H03C1/60;H04L27/12
主分类号
H03C1/60
代理机构
代理人
主权项
地址
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