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经营范围
发明名称
Elektrische Vorrichtung mit einem in einer Entladungsröhre angeordneten Elektrodensystem.
摘要
申请公布号
AT134409(B)
申请公布日期
1933.08.10
申请号
ATD134409
申请日期
1931.02.20
申请人
N. V. PHILIPS' GLOEILAMPENFABRIEKEN
发明人
分类号
主分类号
代理机构
代理人
主权项
地址
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