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经营范围
发明名称
Einrichtung zum Anzeigen der Brenndauer von elekrischen Glühlampen, Glühkathodenröhren und dergl.
摘要
申请公布号
CH217624(A)
申请公布日期
1941.10.31
申请号
CHD217624
申请日期
1938.07.12
申请人
N. V. PHILIPS' GLOEILAMPENFABRIEKEN
发明人
GLOEILAMPENFABRIEKEN N. V. PHILIPS'
分类号
H01J9/42
主分类号
H01J9/42
代理机构
代理人
主权项
地址
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