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发明名称
Electrical communication system
摘要
申请公布号
GB748072(A)
申请公布日期
1956.04.18
申请号
GB19510000708
申请日期
1951.01.10
申请人
STANDARD TELEPHONES AND CABLES LIMITED
发明人
分类号
H04Q11/04
主分类号
H04Q11/04
代理机构
代理人
主权项
地址
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