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发明名称
Tube à rayons chi
摘要
申请公布号
FR690718(A)
申请公布日期
1930.09.25
申请号
FRD690718
申请日期
1930.02.26
申请人
N. V. PHILIPS' GLOEILAMPENFABRIEKEN
发明人
分类号
H01J35/08
主分类号
H01J35/08
代理机构
代理人
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地址
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