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发明名称
Systèmes de commutation électroniques pour téléphonie automatique et analogues
摘要
申请公布号
FR859752(A)
申请公布日期
1940.12.28
申请号
FRD859752
申请日期
1939.05.26
申请人
LE MATERIEL TELEPHONIQUE SOCIETE ANONYME
发明人
分类号
H04Q3/52
主分类号
H04Q3/52
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代理人
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