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发明名称
Improvements in or relating to frequency-shift digital transmission systems
摘要
申请公布号
GB1026161(A)
申请公布日期
1966.04.14
申请号
GB19620000225
申请日期
1962.01.03
申请人
THE PLESSEY COMPANY LIMITED
发明人
HANNON DONALD CHARLES
分类号
H04L27/20
主分类号
H04L27/20
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代理人
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