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发明名称
Perfectionnements aux appareils radio-électriques
摘要
申请公布号
FR705463(A)
申请公布日期
1931.06.08
申请号
FRD705463
申请日期
1930.10.08
申请人
THE SPARKS-WITHINGTON COMPANY
发明人
分类号
H05K7/02
主分类号
H05K7/02
代理机构
代理人
主权项
地址
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