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经营范围
发明名称
Construction de tubes utilisables dans la gamme des ondes métriques
摘要
申请公布号
FR972522(A)
申请公布日期
1951.01.31
申请号
FRD972522
申请日期
1948.09.28
申请人
COMPAGNIE FRANCAISE THOMSON-HOUSTON
发明人
分类号
H01J19/78
主分类号
H01J19/78
代理机构
代理人
主权项
地址
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