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发明名称
FREQUENCIES TRANSPOSING SYSTEM
摘要
申请公布号
CA325814(A)
申请公布日期
1932.09.06
申请号
CAD325814
申请日期
申请人
LA SOCIETE FRANCAISE RADIO-ELECTRIQUE
发明人
HENRI CHIREIX
分类号
主分类号
代理机构
代理人
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