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发明名称
PULSE CODE MODULATION DATA TRANSMISSION SYSTEMS
摘要
申请公布号
GB1484910(A)
申请公布日期
1977.09.08
申请号
GB19740052768
申请日期
1974.12.06
申请人
SIEMENS AG
发明人
分类号
H03H15/00;H03H17/06;H04B1/62;H04B3/04;H04L25/03;H04L25/04;H04L25/497;(IPC1-7):H04B1/62
主分类号
H03H15/00
代理机构
代理人
主权项
地址
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