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发明名称
TELECOMMUNICATIONS EXCHANGE DISTRIBUTION FRAMES
摘要
申请公布号
GB1474401(A)
申请公布日期
1977.05.25
申请号
GB19740030111
申请日期
1974.07.08
申请人
SIEMENS AG
发明人
分类号
H04Q1/14;(IPC1-7):H02G3/00
主分类号
H04Q1/14
代理机构
代理人
主权项
地址
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