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发明名称
Dispositif de modulation
摘要
申请公布号
FR678941(A)
申请公布日期
1930.04.07
申请号
FRD678941
申请日期
1928.11.16
申请人
SOCIETE FRANCAISE RADIO-ELECTRIQUE
发明人
分类号
H03C1/52
主分类号
H03C1/52
代理机构
代理人
主权项
地址
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