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发明名称
Mehrfachtelephonieanlage.
摘要
申请公布号
CH210435(A)
申请公布日期
1940.07.15
申请号
CHD210435
申请日期
1939.04.21
申请人
N. V. PHILIPS' GLOEILAMPENFABRIEKEN
发明人
GLOEILAMPENFABRIEKEN N. V. PHILIPS'
分类号
H01J31/06;H04J3/04
主分类号
H01J31/06
代理机构
代理人
主权项
地址
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