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发明名称
Système de téléphonie automatique avec communications directes entre des bureaux auxiliaires
摘要
申请公布号
FR1133569(A)
申请公布日期
1957.03.28
申请号
FRD1133569
申请日期
1955.07.04
申请人
AUTOMATIC ELECTRIC LABORATORIES INC.
发明人
分类号
H04Q3/58
主分类号
H04Q3/58
代理机构
代理人
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