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发明名称
Dispositif de couplage pour la commande des dispositifs sélecteurs dans les réseaux téléphoniques
摘要
申请公布号
FR1120931(A)
申请公布日期
1956.07.17
申请号
FRD1120931
申请日期
1955.03.17
申请人
SIEMENS
发明人
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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