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发明名称
Disposition de couplage pour installations téléphoniques avec plusieurs bureaux intermédiaires disposés en série
摘要
申请公布号
FR723084(A)
申请公布日期
1932.04.02
申请号
FRD723084
申请日期
1931.08.20
申请人
SIEMENS & HALSKE AKTIEN-GESELLSCHAFT
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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