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发明名称
Schéma pour installations téléphoniques avec bureaux centraux et bureaux secondaires
摘要
申请公布号
FR1055084(A)
申请公布日期
1954.02.16
申请号
FRD1055084
申请日期
1952.04.23
申请人
LICENTIA PATENT-VERWALTUNGS-G.M.B.H.
发明人
分类号
H04Q3/58
主分类号
H04Q3/58
代理机构
代理人
主权项
地址
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