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经营范围
发明名称
Perfectionnements aux radio-récepteurs
摘要
申请公布号
FR790335(A)
申请公布日期
1935.11.19
申请号
FRD790335
申请日期
1935.05.22
申请人
MARCONI'S WIRELESS TELEGRAPH COMPANY LIMITED
发明人
分类号
H03F3/48
主分类号
H03F3/48
代理机构
代理人
主权项
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