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发明名称
Perfectionnements à la fabrication des tubes à vide
摘要
申请公布号
FR942953(A)
申请公布日期
1949.02.23
申请号
FRD942953
申请日期
1947.02.13
申请人
COMPAGNIE FRANCAISE THOMSON-HOUSTON
发明人
分类号
H01J13/16
主分类号
H01J13/16
代理机构
代理人
主权项
地址
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