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发明名称
équipement auxiliaire à monter en avant des appareils récepteurs de télégraphiesans fil pour réaliser le couplage d'antennes le plus favorable
摘要
申请公布号
FR712224(A)
申请公布日期
1931.09.28
申请号
FRD712224
申请日期
1931.02.27
申请人
发明人
KOCH FRITZ
分类号
H03H2/00
主分类号
H03H2/00
代理机构
代理人
主权项
地址
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