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经营范围
发明名称
Oscillateur à tubes électroniques
摘要
申请公布号
FR847644(A)
申请公布日期
1939.10.12
申请号
FRD847644
申请日期
1938.12.16
申请人
LIGNES TELEGRAPHIQUES ET TELEPHONIQUES
发明人
分类号
H03B5/34
主分类号
H03B5/34
代理机构
代理人
主权项
地址
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