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发明名称
Perfectionnements aux transmetteurs d'oscillations électriques pour signalisation avec ou sans fil
摘要
申请公布号
FR757126(A)
申请公布日期
1933.12.20
申请号
FRD757126
申请日期
1933.06.17
申请人
SOCIETE INDEPENDANTE DE TELEGRAPHIE SANS FIL
发明人
分类号
H03B5/04
主分类号
H03B5/04
代理机构
代理人
主权项
地址
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