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经营范围
发明名称
Oscillographe comportant un tube à rayons cathodiques
摘要
申请公布号
FR903669(A)
申请公布日期
1945.10.11
申请号
FRD903669
申请日期
1944.04.25
申请人
N. V. PHILIPS' GLOEILAMPENFABRIEKEN
发明人
分类号
G01R13/20
主分类号
G01R13/20
代理机构
代理人
主权项
地址
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