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发明名称
Circuits identificateurs de lignes pour systèmes téléphoniques
摘要
申请公布号
FR902622(A)
申请公布日期
1945.09.05
申请号
FRD902622
申请日期
1942.01.10
申请人
LE MATERIEL TELEPHONIQUE
发明人
分类号
H03K17/62;H04M3/64;H04M15/08
主分类号
H03K17/62
代理机构
代理人
主权项
地址
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