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经营范围
发明名称
Perfectionnements aux circuits de contre-réaction
摘要
申请公布号
FR909493(A)
申请公布日期
1946.05.09
申请号
FRD909493
申请日期
1941.06.20
申请人
COMPAGNIE FRANCAISE POUR L'EXPLOITATION DES PROCEDES THOMSON-HOUSTON
发明人
分类号
H03F1/36
主分类号
H03F1/36
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