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发明名称
Méthode et appareillage pour l'indication phonétique automatique de l'heure exactepar la voie téléphonique
摘要
申请公布号
FR40653(E)
申请公布日期
1932.08.13
申请号
FRD40653
申请日期
1931.06.23
申请人
发明人
BELIN EDOUARD
分类号
H04M3/487
主分类号
H04M3/487
代理机构
代理人
主权项
地址
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