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发明名称
Clavier à numéros pour téléphone automatique, avec inscription sur bande de contrôle des numéros choisis
摘要
申请公布号
FR719232(A)
申请公布日期
1932.02.03
申请号
FRD719232
申请日期
1931.06.29
申请人
发明人
LOREIJ OTTO
分类号
H04M1/56
主分类号
H04M1/56
代理机构
代理人
主权项
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