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发明名称
Electrical frequency-selective system
摘要
申请公布号
US2266658(A)
申请公布日期
1941.12.16
申请号
US19380232194
申请日期
1938.09.28
申请人
JAMES ROBINSON
发明人
ROBINSON JAMES
分类号
H03H9/54
主分类号
H03H9/54
代理机构
代理人
主权项
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