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经营范围
发明名称
Signal bandpass filter apparatus
摘要
申请公布号
USRE30394(E)
申请公布日期
1980.09.02
申请号
US19780893212
申请日期
1978.04.04
申请人
发明人
分类号
H03H9/50
主分类号
H03H9/50
代理机构
代理人
主权项
地址
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