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经营范围
发明名称
Frequency monitor and detector
摘要
申请公布号
US2290327(A)
申请公布日期
1942.07.21
申请号
US19400358775
申请日期
1940.09.28
申请人
RADIO CORPORATION
发明人
HANSELL CLARENCE W.
分类号
G01R23/00
主分类号
G01R23/00
代理机构
代理人
主权项
地址
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