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发明名称
Improvements in or relating to cross-bar switches for automatic telephone systems
摘要
申请公布号
GB665863(A)
申请公布日期
1952.01.30
申请号
GB19490005717
申请日期
1949.03.02
申请人
N. V. PHILIPS' GLOEILAMPENFABRIEKEN
发明人
分类号
H01H67/26
主分类号
H01H67/26
代理机构
代理人
主权项
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