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经营范围
发明名称
Perfectionnements aux filtres, aux mélangeurs haute fréquen?e, et aux dispositifs analogues
摘要
申请公布号
FR1050130(A)
申请公布日期
1954.01.05
申请号
FRD1050130
申请日期
1952.02.02
申请人
MARCONI'S WIRELESS TELEGRAPH COMPANY LIMITED
发明人
分类号
H01P1/213;H01P5/16
主分类号
H01P1/213
代理机构
代理人
主权项
地址
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