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发明名称
Dispositif récepteur réduit pour télégraphie et téléphonie sans fil, permettant simultanément plusieurs usages
摘要
申请公布号
FR37870(E)
申请公布日期
1931.02.04
申请号
FRD37870
申请日期
1929.12.31
申请人
SOCIETE INDEPENDANTE DE T.S.F.
发明人
分类号
H03H5/00
主分类号
H03H5/00
代理机构
代理人
主权项
地址
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