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发明名称
Perfectionnements aux systèmes téléphoniques automatiques
摘要
申请公布号
FR1025940(A)
申请公布日期
1953.04.21
申请号
FRD1025940
申请日期
1950.10.13
申请人
COMPAGNIE GENERALE DE CONSTRUCTIONS TELEPHONIQUES
发明人
分类号
H04Q3/42
主分类号
H04Q3/42
代理机构
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