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发明名称
Tube à décharges électriques par arc et à atmosphère de gaz ou de vapeur
摘要
申请公布号
FR706729(A)
申请公布日期
1931.06.29
申请号
FRD706729
申请日期
1930.11.29
申请人
N. V. PHILIPS' GLOEILAMPENFABRIEKEN
发明人
分类号
H01J61/72
主分类号
H01J61/72
代理机构
代理人
主权项
地址
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