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经营范围
发明名称
Improved device comprising an electric discharge tube containing metal vapour
摘要
申请公布号
GB423161(A)
申请公布日期
1935.01.25
申请号
GB19340026968
申请日期
1934.09.19
申请人
N. V. PHILIPS' GLOEILAMPENFABRIEKEN
发明人
分类号
H01J61/52
主分类号
H01J61/52
代理机构
代理人
主权项
地址
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