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发明名称
Electrical signalling systems
摘要
申请公布号
GB1003017(A)
申请公布日期
1965.09.02
申请号
GB19620023117
申请日期
1962.06.15
申请人
STANDARD TELEPHONES AND CABLES LIMITED
发明人
分类号
H04M1/515;H04Q1/38
主分类号
H04M1/515
代理机构
代理人
主权项
地址
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