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发明名称
Radio frequency circuits
摘要
申请公布号
US1764454(A)
申请公布日期
1930.06.17
申请号
US19270181853
申请日期
1927.04.07
申请人
KUEN EUGENE A
发明人
KUEN EUGENE A.
分类号
H01F19/00
主分类号
H01F19/00
代理机构
代理人
主权项
地址
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