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发明名称
Perfectionnements aux supports pour appareils téléphoniques
摘要
申请公布号
FR691870(A)
申请公布日期
1930.10.28
申请号
FRD691870
申请日期
1930.03.13
申请人
S. I. T. I. (SOCIETE INDUSTRIE TELEFONICHE ITALIANE)
发明人
分类号
H04M1/08
主分类号
H04M1/08
代理机构
代理人
主权项
地址
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