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发明名称
Electromechanical filter
摘要
申请公布号
US2631193(A)
申请公布日期
1953.03.10
申请号
US19490076586
申请日期
1949.02.15
申请人
RADIO CORPORATION OF AMERICA
发明人
ROBERTS WALTER VAN B.
分类号
H03H9/62
主分类号
H03H9/62
代理机构
代理人
主权项
地址
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