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发明名称
Roehrensender
摘要
申请公布号
DE490110(C)
申请公布日期
1930.01.27
申请号
DE1928N029764D
申请日期
1928.12.29
申请人
N. V. PHILIPS' GLOEILAMPENFABRIEKEN
发明人
NUMANS JOHANNES JACQUES
分类号
H03B5/10
主分类号
H03B5/10
代理机构
代理人
主权项
地址
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