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发明名称
Système de contrôle d'occupation des lignes sortantes d'un central de commutation automatique
摘要
申请公布号
FR1008571(A)
申请公布日期
1952.05.19
申请号
FRD1008571
申请日期
1948.04.28
申请人
COMPAGNIE INDUSTRIELLE DES TELEPHONES
发明人
LESIGNE HENRI-LOUIS
分类号
H04Q3/42
主分类号
H04Q3/42
代理机构
代理人
主权项
地址
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