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发明名称
Improvements in multiplex communications system
摘要
申请公布号
GB689534(A)
申请公布日期
1953.04.01
申请号
GB19510013545
申请日期
1951.06.07
申请人
MULTIPLEX DEVELOPMENT CORPORATION
发明人
分类号
H04J99/00;H04N5/60
主分类号
H04J99/00
代理机构
代理人
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