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发明名称
Frequency shift signaling system
摘要
申请公布号
US3205441(A)
申请公布日期
1965.09.07
申请号
US19620227345
申请日期
1962.10.01
申请人
THE WESTERN UNION TELEGRAPH COMPANY
发明人
LIKEL HARRY C.
分类号
H04L27/12
主分类号
H04L27/12
代理机构
代理人
主权项
地址
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