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发明名称
SWITCHING DEVICE FOR USE IN AUTOMATIC TELEPHONE SYSTEM OR A SIMILAR SYSTEM
摘要
申请公布号
CA528862(A)
申请公布日期
1956.08.07
申请号
CAD528862
申请日期
申请人
N.V. PHILIPS GLOEILAMPENFABRIEKEN
发明人
JACOB M. UNK;NICOLAAS SCHEFFER;REINHARD C. GREVE
分类号
主分类号
代理机构
代理人
主权项
地址
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