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发明名称
HETERODYNE SYSTEM
摘要
申请公布号
CA330575(A)
申请公布日期
1933.02.28
申请号
CAD330575
申请日期
申请人
LA SOCIETE FRANCAISE RADIO ELECTRIQUE
发明人
ROGER AUBERT
分类号
主分类号
代理机构
代理人
主权项
地址
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