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发明名称
Audio-frequency band filter with adjustable band width
摘要
申请公布号
US2541797(A)
申请公布日期
1951.02.13
申请号
US19480054893
申请日期
1948.10.16
申请人
DAPHNE INVESTMENT TRUST
发明人
WAGNER KURT
分类号
H01F19/02
主分类号
H01F19/02
代理机构
代理人
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地址
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