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发明名称
Dispositif pour commander la succession des opérations au moyen d'impulsions de courant alternatif dans les installations téléphoniques
摘要
申请公布号
FR734223(A)
申请公布日期
1932.10.18
申请号
FRD734223
申请日期
1932.03.25
申请人
TELEFONAKTIEBOLAGET L. M. ERICSSON
发明人
分类号
H04M5/08
主分类号
H04M5/08
代理机构
代理人
主权项
地址
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