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发明名称
Dispositif à courant porteur pour communication secrète ou supplémentaire
摘要
申请公布号
FR937325(A)
申请公布日期
1948.08.13
申请号
FRD937325
申请日期
1946.12.12
申请人
LIGNES TELEGRAPHIQUES ET TELEPHONIQUES
发明人
DUMAS HONORE
分类号
H04K1/04
主分类号
H04K1/04
代理机构
代理人
主权项
地址
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