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发明名称
Filter unit
摘要
申请公布号
US2111710(A)
申请公布日期
1938.03.22
申请号
US19340745006
申请日期
1934.09.22
申请人
RADIO CORPORATION
发明人
LOON CAREL JAN VAN
分类号
H03H7/06;H04B1/10
主分类号
H03H7/06
代理机构
代理人
主权项
地址
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