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发明名称
Système modulateur de fréquence
摘要
申请公布号
FR1012122(A)
申请公布日期
1952.07.04
申请号
FRD1012122
申请日期
1949.06.13
申请人
LIGNES TELEGRAPHIQUES ET TELEPHONIQUES
发明人
BILLOTTET H.
分类号
H03C3/14
主分类号
H03C3/14
代理机构
代理人
主权项
地址
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