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经营范围
发明名称
Perfectionnements aux générateurs thermioniques d'oscillations
摘要
申请公布号
FR728441(A)
申请公布日期
1932.07.05
申请号
FRD728441
申请日期
1931.12.18
申请人
MARCONI'S WIRELESS TELEGRAPH COMPANY LIMITED
发明人
分类号
H03B5/10
主分类号
H03B5/10
代理机构
代理人
主权项
地址
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