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发明名称
Band-pass filter
摘要
申请公布号
US2890423(A)
申请公布日期
1959.06.09
申请号
US19540444695
申请日期
1954.07.21
申请人
NORTH AMERICAN PHILIPS COMPANY, INC.
发明人
SIMONS HENDRIK
分类号
H03H7/01
主分类号
H03H7/01
代理机构
代理人
主权项
地址
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