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发明名称
Appareil pour mesurer les échos sur les câbles téléphoniques
摘要
申请公布号
FR1152197(A)
申请公布日期
1958.02.12
申请号
FRD1152197
申请日期
1956.04.06
申请人
NEOPHONE FRANCE
发明人
MARRO MARIO
分类号
H04B3/46
主分类号
H04B3/46
代理机构
代理人
主权项
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