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发明名称
Installation pour créer un retard dans la transmission d'un courant de télécommunication électrique.
摘要
申请公布号
CH153330(A)
申请公布日期
1932.03.15
申请号
CHD153330
申请日期
1930.09.15
申请人
VIARD,GEORGES
发明人
VIARD,GEORGES
分类号
主分类号
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代理人
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