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发明名称
Machine automatique pour l'enregistrement des appels et le contrôle des comptages sur une ligne d'abonné d'un bureau téléphonique automatique
摘要
申请公布号
FR780629(A)
申请公布日期
1935.04.29
申请号
FRD780629
申请日期
1934.10.31
申请人
发明人
GIRARD ROBERT-FRANCOIS
分类号
H04M15/38
主分类号
H04M15/38
代理机构
代理人
主权项
地址
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