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经营范围
发明名称
Tubes électriques luminescents remplis de vapeur de magnésium
摘要
申请公布号
FR718213(A)
申请公布日期
1932.01.21
申请号
FRD718213
申请日期
1931.06.05
申请人
OSA PARTICIPATIONS INDUSTRIELLES
发明人
分类号
C03C3/064;C03C3/091;H01J61/30
主分类号
C03C3/064
代理机构
代理人
主权项
地址
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