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发明名称
Procédé et dispositifs d'obtention de courants composés
摘要
申请公布号
FR825350(A)
申请公布日期
1938.03.01
申请号
FRD825350
申请日期
1936.11.18
申请人
SOCIETE INDUSTRIELLE DES TELEPHONES
发明人
分类号
H04K1/06
主分类号
H04K1/06
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