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发明名称
IMPROVEMENTS IN OR RELATING TO MULTIPLEX CARRIER TELECOMMUNICATIONS SYSTEMS
摘要
申请公布号
GB1214605(A)
申请公布日期
1970.12.02
申请号
GB19690036677
申请日期
1969.07.22
申请人
SIEMENS AKTIENGESELLSCHAFT
发明人
分类号
H03B21/02;H04J1/06
主分类号
H03B21/02
代理机构
代理人
主权项
地址
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