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发明名称
Automatic telecommunication exchange system
摘要
申请公布号
GB740531(A)
申请公布日期
1955.11.16
申请号
GB19500029430
申请日期
1950.12.01
申请人
STANDARD TELEPHONES AND CABLES LIMITED
发明人
分类号
H03K19/12;H04M15/08;H04Q3/00
主分类号
H03K19/12
代理机构
代理人
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地址
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