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发明名称
Perfectionnements aux rattrapages automatiques de fréquence
摘要
申请公布号
FR840094(A)
申请公布日期
1939.04.18
申请号
FRD840094
申请日期
1937.12.24
申请人
COMPAGNIE GENERALE DE TELEGRAPHIE SANS FIL
发明人
分类号
H03J7/04
主分类号
H03J7/04
代理机构
代理人
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地址
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