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发明名称
Méthode et dispositif d'abaissement de fréquences pour la transmission d'images vivantes à distance
摘要
申请公布号
FR723724(A)
申请公布日期
1932.04.14
申请号
FRD723724
申请日期
1930.12.10
申请人
发明人
THURM LEON
分类号
H04N7/06
主分类号
H04N7/06
代理机构
代理人
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