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发明名称
Frequency selective device
摘要
申请公布号
US2728911(A)
申请公布日期
1955.12.27
申请号
US19500155207
申请日期
1950.04.11
申请人
PHIL CUTLER;ROSS KARL F
发明人
CUTLER PHIL;ROSS KARL F.
分类号
H04J1/08
主分类号
H04J1/08
代理机构
代理人
主权项
地址
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