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发明名称
Frequency responsive apparatus
摘要
申请公布号
US2542638(A)
申请公布日期
1951.02.20
申请号
US19490084178
申请日期
1949.03.29
申请人
GENERAL ELECTRIC COMPANY
发明人
DESCH PHILIP F.
分类号
H02J3/08
主分类号
H02J3/08
代理机构
代理人
主权项
地址
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