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发明名称
Perfectionnements aux récepteurs à sélectivité variable
摘要
申请公布号
FR954047(A)
申请公布日期
1949.12.16
申请号
FRD954047
申请日期
1947.09.24
申请人
COMPAGNIE FRANCAISE THOMSON-HOUSTON
发明人
分类号
H03G5/26
主分类号
H03G5/26
代理机构
代理人
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地址
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