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经营范围
发明名称
Perfectionnements apportés aux systèmes de transmission par courants porteurs
摘要
申请公布号
FR761647(A)
申请公布日期
1934.03.23
申请号
FRD761647
申请日期
1933.09.18
申请人
LIGNES TELEGRAPHIQUES ET TELEPHONIQUES
发明人
分类号
H04J1/08
主分类号
H04J1/08
代理机构
代理人
主权项
地址
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