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发明名称
Heterodyne system
摘要
申请公布号
US1978446(A)
申请公布日期
1934.10.30
申请号
US19310534751
申请日期
1931.05.04
申请人
COMPAGNIE GENERALE DE TELEGRAPHIE SANS FIL
发明人
AUBERT ROGER
分类号
H03D7/14
主分类号
H03D7/14
代理机构
代理人
主权项
地址
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