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经营范围
发明名称
Perfectionnements aux systèmes amplificateurs
摘要
申请公布号
FR36492(E)
申请公布日期
1930.07.03
申请号
FRD36492
申请日期
1929.01.24
申请人
COMPAGNIE FRANCAISE POUR L'EXPLOITATION DES PROCEDES THOMSON-HOUSTON
发明人
分类号
H04B1/16
主分类号
H04B1/16
代理机构
代理人
主权项
地址
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