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发明名称
Perfectionnements aux systèmes de transmission des signaux électriques
摘要
申请公布号
FR40709(E)
申请公布日期
1932.08.22
申请号
FRD40709
申请日期
1931.09.02
申请人
COMPAGNIE FRANCAISE POUR L'EXPLOITATION DES PROCEDES THOMSON-HOUSTON
发明人
分类号
H03C3/14
主分类号
H03C3/14
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代理人
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