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发明名称
Dispositif de transmission automatique des taxes pour communications télégraphiques dans les installations à sélection automatique
摘要
申请公布号
FR831705(A)
申请公布日期
1938.09.13
申请号
FRD831705
申请日期
1938.01.05
申请人
发明人
分类号
H04L12/14;H04M15/04
主分类号
H04L12/14
代理机构
代理人
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