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经营范围
发明名称
Elektronrör
摘要
申请公布号
FI24392(A)
申请公布日期
1950.06.10
申请号
FID24392
申请日期
1947.06.27
申请人
N.V.PHILIPS' GLOEILAMPENFABRIEKE
发明人
ZAAT JOSEPHUS ARNOLDUS B.
分类号
H01J19/00;(IPC1-7):H01J19/00
主分类号
H01J19/00
代理机构
代理人
主权项
地址
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