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发明名称
Dispositif pour empêcher la formation d'indicatifs déterminés sur les lignes téléphoniques
摘要
申请公布号
FR1514774(A)
申请公布日期
1968.02.23
申请号
FR19676948379
申请日期
1967.03.08
申请人
TN-TELE-NORMA COMPAGNIA ELETTRO TELEFONICA
发明人
分类号
H04Q3/00
主分类号
H04Q3/00
代理机构
代理人
主权项
地址
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